I have taken my birth control everyday except wednesday, thursday after unprotected sex i took two pills. am i proceed or should i take plan b?

Protected: You are still protected if you only miss one pill and take two the next day. Bear in mind; however, that over the course of a year, if you miss pill occasionally, your chance of pregnancy rises a few percentage points. With perfect use the chance in a year is around 1% but if you miss pills or don't take them at the same time every day, the risk (over a year) can be as high as 7%. Best wishes