I was on hydrocodone for about a week a few weeks ago because I had wisdom teeth surgery. I usually menstruate every 24-26 days, but I am on day 31 and I still haven't gotten my period. Could hydrocodone affect my cycle? I have been very moody and tired, but no other signs of pregnancy. I am thinking its just PMS symptoms, but I am not sure. Every time my bf and I had sex we always used protection with spermicide. Help!