You don't necessarily OV even if you have a period! Even normal healthy people will have a anovulatory month here and there and it isn't a problem.
The vast majority of people who have their period are OV though. xx
Also we went though a phase about 3 weeks ago of Bun biting me. Like all his strength drawing blood biting
But we got through it and all is well again. It didn't coincide with teething though, as he has had 6 teeth since his 1st birthday. Don't really know what it was tbh!
But I just would say "no biting" firmly and stop the feed immediately. He got the idea!