Hi. I'm 17 years old and I've NEVER had sex a day in my life. I've been planning to, so 3 weeks ago I started birth control. on the last day of my first 7 pills, my period started 3 days late. It was heavy then light then heavy, I called my doctor and she said it was perfectly fine and expected. Anyway, my period has been practically NOTHING for three days now, just tiny light brown spots. Yesterday, there was nothing. Today, I woke up and saw on my panty liner a small gushy grey/brown clot and I was instantly shocked. I've had cramps here and there and they did hurt, but only for like a second.. I did have oral sex a few weeks ago so maybe sperm got to me somehow? I'm just confused and sad