If you have only just started taking the antibiotics then you may be more at risk of a pelvic infection having developed due to the 6 day delay (but with sleep deprivation I may have misread you )

Things to look for with an infection post miscarriage are odour (foul and distinctive from your normal, healthy female scent), discharge (greenish or yellowish is a concern), fevers and pelvic pain / discomfort. TBH, I would see your GP ASAP as a pelvic infection can have significant consequences for fertility. It is hard to assess the severity yourself as you might seem well but not be.

Look after yourself honey A miscarriage can throw you right out emotionally as well as physically but you need to make sure you look after you while you grieve and deal with the various emotions.