I can pretty much guarantee that I'll feel teeth before I feel any lumps.
Not that I'm scared of being bit, I'm rather curious about what it feels like, but if it stresses the female that much, then it seems to me like it would be better to leave her alone.
So if my calculations are correct, there might be babies in August (100 days should be around mid-august). Talking parietalis, what time of year would they normally give birth in the wild? Let's say in the northernmost parts of their range.