I'm on the depo shot for 4 years and having pregnancy symptoms. i have regular sex with my boyfriend but he always pulls out. chances being pregnant?

Pretty Good: No birth control is perfect. "Pulling out" is not a reliable way to prevent pregnancy. Try an early pregnancy test from the drugstore. If negative, wait a week and repeat the test. If positive, see your OBGyn. If it turns out you're not pregnant then something else is going on. Check it out. Buy your boyfriend a box of condoms. Tell him "No glove - no love."