Help! Help!!!!!!!

So I took birth control for almost a month and then at the last week the placebo pills I only took four of them because I lost my pack, and the next day I took a white one. The regular pills. Now I've been taking the regular for a week. My boyfriend and I had unprotected sex for about a minute. I was wondering if I should be worried at all or if I should be okay? He didnt even finish or anything