I was a virgin until last friday my partner and i had unprotected sex. he tells me he didn't cum and not to worry but i don't know what to do please help?

Pregnancy: There is always a chance of pregnancy with unprotected sex. You are likely more than 72 hours out from sexual intercourse, but sometimes emergency contraceptive pills like plan-b can be taken within 5 days (but it's less effective). Other than that, you can wait and if you miss your period, take a home pregnancy test. Please see your doctor about birth control options. Best of luck.

Use protection!: Start using protection such as condoms and spermicide with all future encounters until you speak with your doctor about what birth control method is best for you. It is too late for morning-after pill so if you don't get a period, see your doctor and get a pregnancy test...Just because he says he didn't have an orgasm doesn't mean you can't get pregnant. Take care of yourself and use a condom !