Vibration feeling

Tiffany

I'm currently 9dpo(I think). When I was 6dpo I started to feel this vibration feeling in my uterus(like a car idling). It will last 30 seconds and stop. It literally happens all day. Has anyone had this? I dont know what's causing it. It's not my stomach so I ruled out gas, but I have no idea what it could be! Any suggestions?