I am the mother of a toddler I carried. During my years of pregnancy, I found myself attempting to fit into the femme box. Now that my son is older, I'm reverting back to the butchness of my youth and I feel great about it! I never wanted a kid but the desire struck me when I was in my late 20s.
There's an excellent graphic novel called Pregnant Butch: Nine Long Months Spent in Drag - it is excellent and really reflects my experiences as a butch mom. Thankfully, I live in a progressive city and I've met others just like me through my LGBTQIA+ community chorus.
The only funky thing I'm left with from pregnancy is poor feelings around my breasts and some dysphoria, but I'm working through it with my therapist. I was a small chested young butch, but having a child changed my body in various ways.
I enjoyed this graphic novel: Pregnant Butch: Nine Long Months Spent in Drag
Relevant graphic novel! https://www.amazon.com/Pregnant-Butch-Nine-Months-Spent/dp/1593765401
I was searching around, and I found this very supportive article! http://www.slate.com/blogs/outward/2015/08/06/maternity_wear_for_butch_mothers_to_be.html
It mentions this book, which you might find helpful! https://www.amazon.com/dp/1593765401/?tag=slatmaga-20