I started the pill over a month ago. i have been taking amoxicillin for 2 weeks and after i finished i got breakthru bleeding. is my pill not working?

The antibiotic: HAS NOTHING to do with your breakthru bleeding which is only related to the type of bill (dosage od estrogen) . An extra pill will helps stop it (be sure you have a EXTRA pack for next cycle) Speak with your pill presciber for a possible change of pill brand/strength (I usually wait..use the "extra pill" then see if it happens again in the next cycle before I change the type/Brand of pill Z