When will af return

So i had a miscarrige back in jan and my period has still not returned 6weeks later.. according to google it should return between 4-6wks if you have a regular cycle which i did before i got preg. Now i had mc bleeding for about 1week then the usual weired browny light pink mucasy stuff. Then i started bleeding again bright red heavy with clot like stuff about 2nd wk of MC then stopped back to the other mucasy stuff then the odd heavy/light bleeding spotting for up to the 4th week of mc. So not sure if my period was then? Also taken preg test 2wks after to check for hcg and was negative and also took one yesterday(as we dtd 2wks after as everyrhing seemd to of stopped but came back again) n that test was negative. Im starting to worry.