Sounds like the babies having hiccups but you can't feel that at 7 weeks idk what that may be. I'm 36 weeks also and my baby girl has the hiccups all the time through out the day and nite and it's like a popcorn feeling every couple of seconds
Mines lower down, I've only noticed it recently.
I had thelat twice on the upper part of my stomich, I dont know what is it. I AM only 7w