Hi all.

My girlfriend and I had sex (we're both 16) on Labor Day. Her period is due about the 18th, and she hasn't received her period yet. It was her first time. We used protection, I came inside.

She hasn't had any symptoms (she's always tired...was beforehand too). She has begun to get cramps (which I was told might be a sign of her incoming period).

Is it possible that her first time delayed her period? It has been about 2 weeks.