Is it wrong to be a trans guy who wants to get pregnant?...

Not at all, lots of trans men want to and do get pregnant. It can be a good experience and we get to have a unique perspective on fatherhood. Even I've considered it under specific circumstances despite my severe dysphoria, but I have other medical issues that make pregnancy incredibly dangerous for me so that's never really a serious consideration. It also makes sense to be on the fence about it, since it could bring other issues like misgendering and discrimination and it can be even more difficult without the right partner or support system.

not at all!! lots of trans men/mascs give birth. before and during transition, too. it doesn't make you any less trans to own the body parts that you have now. you're allowed to do whatever you want to your body regardless of your gender or transness ☺️