I recently got 2 female rats and one was pregnant apparently. I didn't know for a bit so I kept the 2 females together and separated them once I noticed that one was pregnant. They wrestled a lot even when she was heavily pregnant (I only noticed she was pregnant recently because her nipples started showing) and I'm wondering if that might hurt the babies inside of her? I'm worried they will come out messed up because I heard that pregnant rats are super delicate. Am I being paranoid or should I be prepared for damaged babies?