Im 17 years old and sexual active, my boyfriend and I use protection 98% of the time.and when we.don't he pulls out and I pee after were done, my last period was on August 25-27 and today is October 26 almost one month since my period, it's usually irregular, I get stressed all the time and I took a test about 2-3 weeks late and it came back negative Im very stressed and scared and don't know what to do