I was the same hon. With this last AF (like you, first since m/c) and with my second m/c. So much so that I'd convinced myself that I'd had one of those 'lose a twin' pregnancies and was still pregnant. lol. idiot that I am. Mine only last about 2.5 days and was much lighter than normal. I got pink CM beforehand and AF cramps for 5 or 6 days before hand (again, made me think I was pg). It also stopped as suddenly as it started (no spotting etc which I usually have).
It was, all in all, a very odd period!
Maybe there is no 'normal' and it's just settling back in.
Thinking of you. Hope your job stays secure and the few months pass swiftly!!