My last period was on 4th October. I normally have periods in every 28 days. I am 19, and had sex for the first time on 24th of October with a condom, and we didn't have full penetration, and no ejaculation inside. Although there was a little thrusting when he had his undie on and I was bare for a minute. The condoms were dry from outside when we checked them. After sometime I had a soft mild cramp in my stomach which lasted for about 40 mins. I had the same sort of cramp at night for a second, and also when I woke up the next morning for one or two seconds. My next date for period should have been 2nd of November and today it is 5th and I'm still not chumming. I'm really very tensed, what can I do now? If pregnant, is there any pill which I can take now to stop pregnancy? It has been 11 days after sex. Please suggest me the name of a medicine which I can take. It's very urgent for me.