My wife felt like crap for the majority of the first trimester; flitting between "puking her guts out" and "hungry enough to empty a fridge", boobs that were too sore for a bra most days, feeling physically drained all the time... She did her best to cater to my fetish during that time, but if she wasn't feeling it, then the best thing to do is focus on her and her needs for the time being. Trust me, that attention you pay her will be returned tenfold as and when things level off for her. Hell, when my wife hit about 15 weeks and she woke up for the first time without feeling nauseous, she was so happy that I woke up to her riding me.

The most important thing right now is that you two keep talking - let her know that you're there for her even if her needs and mood seem to switch at a moment's notice (and believe me, they will), let her know that she's still desirable. If she feels relaxed and able to approach you, you're far more likely to get a lot more of the fun times ahead.

Tl;dr - there's a lot of weird stuff happening to her body right now. Be patient with her and be communicative without pressuring her. It'll pay off.

Yes, I’ve transitioned to first-team husband of the year, just trying to get her to rest and relax, and make her comfortable. She has told me plenty how great I’ve been, so I know when she ends up past this stage and feeling better, the stage will be set. I like the idea mentioned of letting her make the first move, which she has plenty of experience in.

Congratulations on her pregnancy brother ! Good times up ahead !  From what I ve read here you are doing great so far.
Keep it up ! Try to enjoy whatever comes without pushing it. I don't know if you ll confess your preg fetish, some heroes do, other brothers go down their solitary path in silence.
Whatever you choose it's cool though ! Capture and savour any given moment/second, cause it's just temporarily. 9months seem like a lot of time but it's ll just fly away eventually.
Surprise surprise, not all pregnant women want sex all the time, but when she DOES want it, boy oh boy... , epic incoming moments.

Ok so things have calmed down a bit, she has been feeling better and I’ve been doing everything in my power to ease her in day by day. We’ve started a little trend of her taking a bath while I hang out with her. Her boobs are definitely getting bigger (they’re already very big) and she loves to show me how dark her nipples are getting. Well, things got hot and heavy and we had some incredible post shower sex. She came HARD, but had some cramps right after. But this is normal, so it wasn’t too traumatic.

I have a lot of internal monologues about the changes to her body when she is naked in my presence. I have the urge to film her whenever I can, but I’m waiting cause I know I should save this ability for when she starts to show. She talks about how she’s going to walk around with her big belly out all the time, and I just play it cool and let out a little chuckle. But I can’t hide the boner I get every time she unintentionally teases me like that.

I bet if you keep telling her how sexy she is rn but do it matter-of-factly (versus saying "this is painful how hawt you are") over and over again each day at around the same times, she'll start to get some ideas. Until then, keep yourself in check and don't forget about the Manual Override.

In response to kinkyother, I have been very open about my attraction to her. I’ve told her things like:

How I love how beautiful and smooth her skin is now
How awesome it will be as her boobs get bigger, and how much I love watching her nipples change. We do a daily ‘nip check’ where I get to inspect if they are darker/different. This rules because she has big boobs already, and the idea of them getting full and veiny drives me loko.
She’s stated that she knows I’m going to be obsessed with her bump when it gets big.this is interesting because my fetish wasn’t out in the open before, but she’s caught me looking at pictures before. It wasn’t porn, but I think she knows, if I hadn’t made it obvious the past week.

I feel sometimes I’m being obsessive in my thoughts and lusts, but we’ve always been very close, physically and emotionally. I have learned when to get intimate out loud, and the sex has been incredible. I have to jerk off regularly so I don’t bust immediately when we’re fucking. I’ve always had a deep desire to make her cum, so she knows sex will lead to her orgasm. 

I am so excited for the future, watching her body change. I’ve been wondering, what’s it like when you watch your girl grow when you see her every day? The changes must be very shuttle and hard to notice, but I’d love some feedback.

So I wanted to post an update, mostly for my own mental well-being.  

My wife is doing great. We have the second doctor appointment in about 10 days where I will be able to see the ultrasound, which I’m really excited. I’m excelling in my role as ‘the rock’. I have always been a great husband, but it’s been an all time performance where I handle all the duties around the house, and treat her like the queen she is.

The sex has been amazing. We cum together every time, her orgasms are incredibly powerful and often leave her in tears, and while her nipples have mostly been off limits, we found when I pull on them as she gets close to climax it blows her mind. Watching her huge tits bounce around while her new little bump is just starting to show. She texted me things like this:
 
“I think I popped today I look pregnant I had to wear a belly band because my pants won’t button.” 

“You better be ready for some sexy time when you get home because this show is sexyyyyy got me feeling a type of way.”

Her tits have gotten so big, and her nipples are just starting to get dark while some veins are starting to show. And she wasn’t lying about her belly, which seemed to start to show overnight. 

However, it’s moments like that which turn in me into a puddle of horniness and turns my sex drive to 11. It’s insane watching these things I’ve fantasized about most of my life happen to my wife, who I took her virginity and am the only man she’s ever been with. And it’s REALLY difficult if she isn’t in the mood.

She will pull her huge tits out around the apartment and say things like ‘they’re soo engorged’ and I’ll have to pretend not to be purely sex driven. She knows I’m obsessed with her and the changes to her body, but work is kicking her ass, and she usually wants to just sleep.

I have to battle being there for her emotionally, while I’m quietly losing my mind not being able to make sweet love to her all the time. I also have real bad FOMO not being able to film and document every second. She is objectively pretty and has an amazing body, but still manages to be camera shy which I think has caused her reluctance the 2 or 3 times I’ve asked to photograph her (in clearly sexual ways, she’s all in on maternity shots as she grows bigger). I could use all the advise possible. I thought I was starting to calm down until she started to ‘pop’ and now I feel like I’m crazy again.

Let me start off with congrats dude. And I hear you, the struggle is real.

I just found out my wife is expecting on January 1st. She's at 4-5 weeks, so nothing shows yet, but just knowing has set me off. She hasn't been puking, but she's been queasy all week, and hasn't wanted to be touched. But her small chest is perkier than it's every been in our 8 years together. she's so warm, even sleeping a foot away from her I can feel the heat radiating off her. And I don't know if my hormones respond to hers, but I think she's looking prettier and prettier each day (and I've been getting headaches, ache, and nausea- to go with hers I guess)

I never came out to her about my fetish; we once had a discussion about different fetishes, and she brought up pregnancy even before I did and said it bothered her...
At least she allows me to fetishize her cute feet.

She's not up for me taking belly shots in a sexual way, she's hardly up for it at all- she's camera shy, and has a poor self body-image. I think she's beautiful, but she doesn't hear me (or believe me) when I say it, it has to come from other people.

She's not really excited yet, while I am very excited. I'm the one that is telling her what to expect and how big the baby is at this stage, etc. She's at least allowing me to take a few photos each week, "for documentation purposes". I've convinced her that even if she isn't into it now, when she's done she might wanna see her progression.

Make hay while the sun shines.

Congrats man