tennis ball feeling?

I was asleep on my stomach and my boyrfriend wanted to make love. So I woke up to him putting it in. Of course I got excited. As soon as we started I started feeling this tennis ball thing hitting against my stomach. It was very uncomfortable. It felt like the babys head I am not sure what it was. So we changed positions and we continued and I still felt it. so I placed my hand on my stomach and i felt this circle bump there. Then my boyfriend placed his hand there and he felt it to. So i wasnt comfortabel so we stopped. About an hour later the tennis ball bump moved and we were able to have normal sex. I am 15 weeks pregnant do you all think that its the baby that we were feeling?

at 15 weeks, it's definitely not the baby's head you're feeling-- it might have been the entire placental mass including your baby or it could have just been a muscular cramp. It's possible that your baby can be "felt" in the sense of movement, but definitely not their head (which wouldn't be the size of a tennis ball at 15 weeks-- they're only about 4 inches long at that point).

It happened to me while having sex with 2 guys