Omg! I had the same thing. It goes away. I called my OB and he said itz normal. The pain actually got worse for me. It was like period cramps. I run to the restroom and nothing there. Im 14 w almost and i stopped getting them after maybe 8or 9 w.
I have cramping but mines is bad so the minor cramps I wouldn't worry to much
I had the same thing around the same time as you, I have also read a lot of people having it. It's your uterus streaching and being pulled. Completely normal. Only worry if you get fresh blood with it, but I don't think you will!