Lately I've been getting a vibrating feeling in my uterus. It comes and goes every few minutes, it's starting to get very annoying. I'm on the pill so I'm not to sure if that has anything to do with it, also Ive already had my period last week. I might also add that I've been having very dull lower back pain (that was before the vibrations started to occur). I Havent been having any sharp pains or any pain at all down in my lower abdomen so not to sure what's going on. If someone could answer and make me stress less about it that'd be awesome! Thanks :)