How soon after conception can you experience even slight symptoms of pregnancy? I am on the pill but was taking antibiotics......me and the guy who I am with right now have been having a lot of sex without any sort of back up (we both know the consequences and have agreed that if anything happened we would raise the baby together). I would be anywhere between 1-2 weeks if I was pregnant.....I just have not been feeling right lately. Very gassy and my nipples are really sore and its hard to sleep at night because of it all. I've been so exhausted....no matter how much I sleep i am just so tired, and I have been peeing way too much. I am hoping it could just be a side effect from the antibiotics...although a baby would be ok, I am 19 and I'd rather not go through this right now. Can anyone tell me if it's possible I could be pregnant? I am supposed to get my period next week...