It's too early, the fetus is teeny weeny inside a nice cushion of amniotic fluid. However, I'd discourage her from launching in such a way, it's not the greatest habit anyway. My son kicked me in the stomach (not hard) in early pregnancy and I lost the pregnancy, and although I pretty much know the two are not related, I stressed about it anyway and emotionally sort of felt like that hurt the pregnancy. You don't want to stress every time Fifi kicks off.