Started on erythromycin about 2 weeks ago for a skin problem, going great thankfully. Fast forward to my period due date and nothing at all. I’m only 4 days late and I’ve tested negative but had a few symptoms than could be pregnancy or antibiotics. Light stomach cramps, urinating more frequent and a tiny bit of spotting (TMI sorry) just wondering if anyone knew if antibiotics are likely to delay my period. Will contact the doctor tomorrow but I know he’ll tell me to wait a few more days. Any experience? BTW I’m not on any contraception