My period is 2 days late. i usually have an irregular period because i'm thicker. but i have had sex with my boyfriend the past few weeks. should i be worried? he never came in me?

Any erect penis is secreting sperm containing semen. They are not just when he comes. Some women occasionally skip a cycle or two. By itself the delay is not that unusual. Add this to unprotected intercourse and you could be pregnant. If the delay is due to pregnancy a urine pregnancy test will likely be positive. Sometimes they can be falsely negative early in pregnancy.