I'm 22 years old. I have a fairly normal cycle that ranges from 33 to 40 days. This last cycle really stressed me out. My last period started 6/4 and lasted 5 days. Before I continue let me say that I had unprotected sex the day before I started. 2 weeks after my period ended I started spotting. This hAs never happened to me. It was brown and grainy in texture. This lasted about a week. 7/9 I took a hpt. It was negative. That next week I expected my period. A week later I started spotting again. I took another test. Negative again. I don't know if this is my period or something else.