I took a few pills late and drank alcohol with them the day my boyfriend came in me? i been on tri sprintec for almost 3 years but i just took my third pill last night and still no period. I'm one that gets really bad cramps too and i havent had one cramping feeling. BUT i am also really extremely sick and stressed and i read that those factors can lead to a missed period. is that true and does it sound like i'm safe?