Hip Pain Symptoms

IM 15 I just started school two days ago and two days iv noticed the pain in my right hip .. a bit in the left .. when im sitting in class, and I could be pregnant, but its only been 9 days since I had sex. .. I havent found if I am or not .. but it's hip or joint pain a sign of being pregnant?? and also, I get these cramps period but iv already got my period this month (sex on the day after iv whitch unusual to hear her pregnancy. time) and I used the method of exit, but theres always chances.

stop having sex your 15