The first day of my last period was 8/21/08, I had unprotected sex on 9/13/08 and according to Dr. Amy ovulation chart I should have started my next period on 9/18/08 and today is 9/19/08 and I still have not got my period.

Is there a chance I could be pregnant? Don't want to be pregnant!! :mad:

The only way to know is get a pregnancy test.

Also you should not base everything off charts, all women's menstrual cycles vary. And the charts are just standardized for the average female. If you do not want to get preganant then you need to think about next time using protection!

Could you be pregnant... yes you could. Anytime you have unprotected sex you have the risk of getting pregnant. If you do not want a child, like plucky said, get on birth control, and use condoms, even then though, you still run the risk of getting pregnant. The only 100% way of not having babies... not having sex.

That's true>>>