Advice??

So I'm 10 weeks pregnant and I was resting my hand on my lower stomach because that's what I do every night. Well, on the left side, right above my vagina its really hard, whereas you move over some to the right side right above my vagina and it's not hard at all. (Sorry I don't know how else to explain it) I'm really confused. It's not raised up or anything, just really hard on one side. Has anyone else had this or should I go to the doctor? It doesn't hurt and I'm not bleeding. Sorry. I'm a FTM with 2 prior miscarriages so any oddity scares me