Hey I'm 15 years old and my boyfriend is 17. A week ago my boyfriend and I had sex 5times. We did it twice with a dom and the rest without, we used the pull out method. But a few day's after we had sex I started to feel very weird. I'm getting sore heads, my nipples are very sensitive and are pointy, my back at the bottow/sides are sore and my belly feels as if I am bloated, and has gone to a rounded shape:/ I haven't missed my period because my last on came on the 31-12-12 but it normally comes every 2weeks?? Can you help me please I'm so confused:(