I'm currently dating a man in the Marines. He came back for a month then was deployed. We are not trying to have kids but we did have unprotected sex the entire month he was back. Each time he did pull out. After he left I got my period for 2 days which is abnormal. Then after that (a week or so after) I've had heavy brown discharge and its gone on about two weeks now. Of course I'm scared but I don't want to go buy a test cause I don't want to waste my money do to overreacting. Within the past two days I've thrown up and had some pain. Is something else going on or could I actually be pregnant? Help.