Hello dr, im 2 weeks delayed. but negative pregnacy test. lately im so stress and always drinking alcohol. is there any possibilities that im pregnant?

You tell me: if you have had unprotected sex in the last several weeks, then you could be pregnant, and even if you used birth control, most of them (with the exception of depoprovera and several kinds of IUD) have failure rates between 1-3% or so, sometimes higher if they are not properly used (like condoms). Unless you are certain you would not carry a pregnancy to term, STOP DRINKING.Repeat the test/see OB.