Conversation: The conversation between human and AI assistant.
[|Human|] I ve been experiencing spotting for the past 7 days. The week before last, I was on 875mg of amoxicillin twice daily for a case of strep. My period should be coming in 4 days. I ve been on birth control to align my periods and they always come every four Tuesdays. Did the amoxicillin somehow affect my birth control and how it syncs my periods? I ve never bled between periods while on the pill. Please help.
[|AI|]  Hello, Thanks for trusting us with your health concern. You are right. The infection and the antibiotic can cause the spotting as there is reduced efficacy of the oral pill in these circumstances. If you have not had any intercourse during the course of the treatment, especially during the second and third weeks of the cycle, you need not worry about conception with a possible failure in contraception. This spotting is likely to be premenstrual. Please do not worry, it should settle down with the next course of pills. Get help from an expert if the spotting persists. Hope this helps.