I had unprotected sex the last day of my period, & he came in me. can i get preg? my boobs are swalloen & sore, heartburn is bad, period starts in 1w.

Sex leads to preg.: Fertile couples who have sex can get pregnant. A urine pregnancy test, done correctly, gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and thus lead to a repeat test.