Bfp and coffee ground discharge

I am currently 17DPO, started spotting 2 days ago, TMI ( brown discharges, haven’t yet seen any red)

15dpo, At first I thought it was af, but it was unusual because I only spotted when I wiped, yesterday, 16 dpo I took a test and got a BFP, after that started spotting more, not only when I wiped, (still same colour, and not enough to fill a pad)

Today 17 dpo woke up, still some spotting when I wipe

After a mmc and a chemical I don’t know what to think, any similar stores to give me hope?

Is this another mc?

Thanks