Acne? Pms or pregnancy?

Becca
I got my AF last month about a week early. It seemed to be normal but since last week I haven't felt like myself. My breast would be a little sensitive at times and I got randomly nauseous a couple times. I've never had problems with acne but all of a sudden a zit popped up that was huge and really painful. Then today I noticed two more making appearances. I don't want to get my hopes up but should I take a test? My AF for this month isn't due for another two weeks. Seems like a silly question I know.