I took birthcontrol pills fir almost 2 weeks than stopped haven't had my period regular since then its been for a day and brown can i be pregnant?

Amenorrhea: It is possible but unlikely. Wait another two weeks, recheck with pregnancy test, use alternate form of contraception in the interim if you do not wish to become pregnant.

Take a preg test: Since birth control pills only protect a person from pregnancy if they are taken every day, if you stop the pills you aren't protected, so it's a good idea to have a pregnancy test. Brown spotting is usually caused by small amounts of menstrual blood that stays in the vagina until the blood cells break down, causing the brown color. A visit to your doctor might be a good idea.