I think everybody is different but if it can help you to have one more opinion... I didn't transition yet but when I see my childhood pictures it's not really painful. Seeing me in a dress or a skirt (clothes I didn't wear for a least 10 years) is more strange than anything else. I'm more amazed to see that "version" of myself than sad.
You know, it's not because you realize that you are not in the right body and make everything you need to feel yourself that you forget about your life as a "cis considered child". Of course I suppose every trans person has bad memories about the family pressure and so on during childhood. But there are also, I suppose, good family memories. There are even some photos he can like. As an example, I have some baby or child photos where you can't tell if I'm a boy or a girl. And I definitely love them.
And I also like to see old photos of my boy/girlfriends when I have one. Sometimes it makes me think that she/he has been a really better adjusted kid that I could have been but when I look at photos of someone else, I think to them more than to myself

So, if it is important for you to have baby/childhood photos in your house, the first thing to do could be to speak about it with your boyfriend. Perhaps he could surprise you ! (and not only his mother could have these kind of photos. Think about aunts and uncles, brothers and sisters, godfathers/mothers and so on. If he wants to have some...)
Oh, and by the way, I never saw any photo of my mom or dad when they where babies.