My boyfriend and I were intimate on the 5th and the 22 w/o protection, but he did not cum inside me, But I know precut can be furtile. I bled a little bit after the one on the 22 I did not have my period in November. I did the bleach test and it just fizzed. No foam. I am young and want no babies. I am tired, and have headaches but I also have a concussion so I am just attributing that to the head injury. Is this just from stress(school and sports ) and the Mirena making my period crazy or is there a chance I'm prego. I am trying to cover all my bases and I'm just nervous.