No the only thing that affects them is antibiotics.
Cortisone does not affect how well the birth control pill works.
Augmentin does not affect how well the birth control pill works.
Caffeine does not affect how well birth control works. Thank goodness!
Paracetamol does not prevent pregnancy, and it does not affect how well birth control works.
Oral sex does not affect the birth control pill. It still works just as well.
Prune juice does not affect how well the birth control pill works. There's no increased risk of pregnancy.
Chlamydia doesn't change how well the birth control pill works. Since you're abstaining until treatment is complete, it's a moot point.
Study after study shows that the vast majority of antibiotics, including minocycline, do not change how well birth control works. Anecdotal evidence from prescribers mean many still recommend using a backup birth control method for a week after a course of antibiotics is done. However, nobody suggests that using minocycline long-term for acne has any effect on how well the birth control pill works.
Birth control works by preventing pregnancy. If you are already pregnant, birth control is of no use.
Shouldn't be a problem. After a full nights' digestion the contents have already been soaked up.
If the birth control fully works, there won't BE a fetus, birth control will do nothing about an impregnated egg or the baby that it will result in.
If an oral contraceptive is taken with certain other drugs, the effects of either could be increased, decreased, or altered. Diazepam however, does NOT affect the efficacy of your birth control. If for any reason you do become pregnant while on the medication you should contact your health care provider as soon as possible.