My period was supposed to start on the 17th this month. And I've had to push it back every two days since then. We had a lot of unprotected sex and my period is still nowhere to be found. I cramp like every other day like I'm ab to start but nothing. I get nauseous anytime I do something active, random hot flashes, boobs were sore yersterday. Maybe just a weird period month? Can I still be pregnant? I did a test yesterday and it was negative.