Need some advice please x

I had a miscarriage at the beginning of April (started bleeding on the 6th). I got my period 28 days later (my usual cycle length) on the 4th may. I didn't do any ovulation tests after so i don't know when i ovulated. We had intercourse on 17th May. AF was due on 1st June, but no sign at all. This morning (6th) i took a clear blue pregnancy test but was negative. About an hour ago i wiped and there was a tiny bit of pinky stuff (can't even call it blood cos it was so light). My period never starts like this so i'm really confused. I've put a pad on and checked a couple of times but there's nothing there. Just a tiny pink bit when wiping. I've heard lots of things about implantation bleeding but an unsure whether that's what this is. I was under the impression that implantation bleeding occured before your period was due? I'm very confused with what is going on! Can anyone shed some light?! Or has anyone experienced anything similar? Thanks in advance xx