I think i could be pregnant, im 14 and i had unprotected sex and my boyfriend came inside of me but it was one day after my period.We had more unprotected sex after that till about a week after my period. I have been getting symptooms but i think its just myself telling me it, it's only been 11 days since we had sex. I have been getting pains in my belly, back ache, when i stand up quick sometimes but rarley i get like head spin. Can you help me please what do you think ?