Lately, I've been throwing up, peeing more than usual, had more headaches than usual, almost everynight I get a bad stomach, or during the day I sometimes get random pains in the belly button area, and I no longer have disharge. My breasts aren't tender, and this has all been happening since my last period after sexual intercourse. I'm on the pill for birth control, and I've been taking it everyday since May. Do you think it's pregnancy?