I jumped off of a bridge at 16 weeks and my son is just fine. Your 3 foot fall will not hurt your little one if a 30 foot drop didn't hurt mine
I'm sure you'll be fine... I was 11 weeks and messing around on a razor scooter with my old mans nephews and tried to pop a wheelie, ended up landing flat on my stomach... baby is good though! lol
Im sure baby is fine . It is well protected. But you should let your doctor know of any fall / slip .
Your baby is fine , it's protected inside your uterus inside your abdomen , it takes a fair amount of direct trauma to hurt baby.