Hi. I am 22 years old and I have been on the pill now for about 2 months. I have had unprotected sex with my boyfriend about 5 times, 2 of which he didn't finish and every other time he pulled out with enough time to not finish inside me. The one time I was slightly worried about, I wasn't sure if he pulled out just in time but I did see him ejaculate on a towel. Being a bit of a worrywart I took the plan b pill the next day. That was about 2 weeks ago and I have had no signs or symptoms of being pregnant. I have taken two pregnancy tests, both negative, and I am supposed to get my period in the next two days and I have had some light brown discharge, which is usually normal for me. I'm pretty sure I'm just worrying too much but is there even a slight chance I can be pregnant?