I've seen a few suggestions for pregnancy, but not a lot for if you're pregnant so here's a few.
1. Say your character is heavily pregnant, about to give birth, the baby won't wait for you to get somewhere private. I think your water should be able to break in public, and you should have the chance to find somewhere to give birth while the pain meter gets higher with each movement around the map. If you can't find somewhere by the time the meter fills up, public birth.
2. It's minor, but I think travel time should be increased the farther along you are and the more babies you have, i.e. if it takes 4 In-game minutes to get from A to B but you're midway through pregnant with twins it takes 7-8 minutes.
I know it's a bit weird, but so am I and I heard pregnancy was coming in the 0.8 update from the comments awhile back