R.W.
There is almost NO way your little one can harm your fetus. I doubt the kicks are strong enough. Your body is designed to protect your pregnancy from far worse things than that. Obviously try to change your toddler's behavior, but I definitely wouldn't worry about your baby's health unless your toddler is maybe literally standing on your abdomen and jumping high or something!!! I think it's just a fact of life when you have older kids and are pregnant. I am 36 weeks pregnant, and my 2 yr old elbows or kicks me in the belly sometimes. It HURTS like crazy, but my baby just kicks right back, haha! I'm getting beat up from BOTH sides! :)