I am 18 year old and I had sex on 5th October, and after 5 day i.e on 10 th October, I had period but the colour of blood is not red it was slightly pink an the duration of my period is also less as compared to previous one as it lasts only on 3 days and also this time there is no too much of pain and blood. So my question is that am I pregnant or not, please help me .And also tell me when I ll check whether I am pregnant or not in pregnancy kit. Please please help me.