Implantation ??? After m/c Helpppp

I'm super confused about this ....I m/c 4/22 !! I started to bd immediately when bleeding stopped!! I'm not sure if I ovulated or when I ovulate !! I normal ovulate as soon as cycle is over.... Does this apply after mc??? So I bd 4/29,30 ,5/01 could it be possible to have implantation on 5/05? I had light pinkish spotting for two wipes then remainder of day and next day it was brown!