I am on birth control and usually one or two days after my pills run out my period starts, tomorrow will be day three and I'm worried. I'm almost 100% sure I'm not pregnant because the last time I had sex was about three months ago and I have had my period since then. Could there be another reason?
You need to take a pill every day. If you miss a day than your body will get confused and start to act strange. If you're really concerned than see your GYN and she'll probably give you a pregnancy test.
Have you taken the pills properly as directed? (at the same time EVERY day, not missing a pill etc) If not, then that would most likely be the reason for your period being late. I do agree, very unlikely you are pregnant.
Other things that can delay a period is stress, weight/diet change, hormone imbalance (this can be from the pills) or some medications you are on, having a virus etc. Worrying about it being late can only delay it more so try and relax, it will show up.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.