I didn't track my period for a while, and a few months ago I thought it was late, so when it came I started tracking it. I honestly think it was almost two weeks late that time but I can't be sure. It started on the 9th on month. 13th the next. And this month it's the 23rd and it still hasn't made an appearance. I have only had protected sex 3 times since my last period (tmi?) and I show no symptoms of pregnancy or my period. Should I be concerned horridly about being pregnant? What could be happening? I know a doctor is my best bet, but (and this is a lame excuse I know) but I'm a student and my normal doctor is an hour away and schedueling an appointment would still take a while before I could find time to go. I'm 23 years old if that's of any importance.