Help!! Newly married and husband and I aren't ready to start a family.

Facts: We use condoms, always, everytime and he pulls out too for extra precaution. The day after my period ended, we had vigorous sex however soon as he pulled out the condom stayed inside of me. He ejaculated onto he's stomach. Is there a chance I could fall pregnant just incase. My cycle is 27, with a period length of 4-5 days (not heavy). I feel sick and my stomach hurts, I also have anxiety :-(