Early symptoms ?

Patient: Dear whom to read this,I am 13 years old and 3 days ago I had unpertected sex with my boyfriend.. This was my first time being unpertected, not I feel i might be having symptoms but I think its too early, is it ?I have been eating like crazy when i normall barley eat , my back and feet are sore, ive been having mood swings and the shit to the right of my left hip bone feels harder under neath