Hi, im 18, i think i might be pregnant but im not sure, my period is now 5 days late, i had unprotected sex multiple times this month, my breasts are sore and feel heavier than normal, my belly is very tense and is extremely bloated (very noticeable) - i have lower back pain, and i feel nauseous now and then over certain foods or smells or just noises that wouldnt normally bother me, i was just wondering if pregnancy could be a possibility, also im not stressed everything has been normal, thanks in advance :)