[silentmuffin]

There is a chance that antibiotics can interfere with the effectiveness of birth control. This is something your doctor should have discussed with you before you started taking it. The chance is still relatively low, but there is a possibility. It's possible that you are experiencing typical "pregnancy symptoms" for other reasons. Stress is one, and it may just be that you're experiencing effects from the birth control that you haven't experienced before. Side effects don't always begin as soon as you start taking a medication. If you are really worried about it, you should take a pregnancy test. There is no other way to be sure. Your mother will not literally kill you...you're on birth control and have been taking it consistently. it's not like you were being reckless and irresponsible. Just tell her that you are worried antibiotics may have screwed with your birth control, and see if she'll get you a pregnancy test or take you to the doctor. The biggest thing is to try not to stress out about it, because that will only exacerbate your symptoms.