Were babies?

Werecreatures often have problems having babies. The main reason for this is that most of them have to change shapes at least once a month. The change is known to create problems bringing a baby to term. It's not a problem conceiving but carrying to term. Now I know a few different authors have suggested that if they just avoided changing until they absolutely had to that they might be more successful carrying to term. Others have suggested that changing often might make it so the baby was used to the stress and was less likely to miscarry. I'm not sure which would be more likely to be successful but they both look risky to me.