I'm 20 years old and worried that I might be pregnant.. me and my boyfriend don't use condoms and I'm not on birth control. He didn't pull out the last day of my period. And he pulled out late about three days ago. And two days ago I woke up at 6AM and just wanted to throw up. My boobs are very sore, and I am always tiered and my period isn't due until the 26th. Three days ago he pulled out but he was too late, so not all the Sperm got inside, but now I think I might be ovualtiong and can become pregnant, with these sore boobs and feeling nauseous I don't know what to think or due.