I removed the game from my computer then put it back on cause I messed up by time traveling.I started 2 new tribes.Set them on slow speed just checked the 1st tribe and 1 has a baby and been nursing for 400 minutes.I didnt make anybabies.Where did it come from?Why is she nursing so long?This is wierd.

Sometimes, a villager MAY breed with another villager, or you may have gotten an event. The lower the speed, the longer it takes to nurse, too.

On half speed that's right for the length of time mothers carry their babies around. As to how the baby arrived, it's not usual that the villagers should have a baby so early in the game. Are you sure you didn't accidentally drop one villager onto another so that they kissed? Or did you perhaps have a special event that might have caused it?