I had unprotected sex on the last day of my period and the day after that. This was June 12 and 13. Is it possible that I could be pregnant, and would I be able to notice any symptoms yet (would I notice symptoms earlier if it were multiples, because that's a possibility)? I've been noticing a lot of PMS symptoms, but it is too soon for it to be that, so I'm wondering if it's all in my head. How soon could I take a home pregnancy test?