This happened to me last month.
I’ve said to myself it was a chem - if I wasn’t TTCing I would have put it down to period down to being 8 days late.
Despite the clearblue ’pregant’, I didn’t ‘feel’ pregnant in the slightest, was suspected something ‘wasn’t right’ a few days in. Kept testing and lines were always faint (never had a strong one) which faded out over a week until spotting, then bleeding.
Maybe it was way to protect myself - but I chose to see it as a very late AF.
However (against docs advice to wait a period) I have fallen pregnant straight away since (currently only 5 weeks). This time I just KNEW before I even took the test. My body, boobs and nausea gave it away! Test came up positive straight away, and really strong so I’ve not doubted.
I felt fine to go for it, and try again as I wasn’t too sad, and didn’t feel my body had to ‘recover’ from anything traumatic. Early mmc is very common, and happens a lot! Tbh, I’d rather have an early 5/6 week mmc than one at 8/9 weeks along.
Good luck, trust your body and mind. Feel/label your experience in whichever way suits you, or makes you gain acceptance!