I have a problem, and I'm ready to crack with the stress of it. I've been on birth control (Yaz) for a year, to help with my acne, though I don't always take it at the same time every day. Sometimes I've missed pills or taken them over 12 hours late. That shouldn't really matter, though, because I'm not sexually active. My boyfriend and I have decided to wait until we get married to have sex....