Been on amoxicillin since Monday afternoon. It's now Wed's afternoon. My infection has reduced but I'm not pain free yet. How long until its gone? Worried I might need different antibiotics. They offered metronidazole at first but I said I'd not had it before so I'd prefer amoxicillin as that what I've always had previously but I'm wondering if they offer that first as amoxi doesn't work as well any more? Anyone else had this experience?