So my boyfriend and I had unprotected sex on March 4, but it only lasted for about 30 seconds. He didn't ejaculate at all and there couldn't have been sperm if there was pre-cum because he went pee right before. We had sex again on March 19, but with condoms and nothing broke. I m still worried if I am pregnant. I'm like 4 days late but then again my period is irregular. My breasts hurt like they never hurt before, and I have some bloating and minor cramps, and also some nausea. I'm just stressing out and I'm wondering if i could be pregnant??