miscarriage?

Today AF is one week late. I've taken 2 pregnancy test and both were vvvvvfl. last night after I peed I noticed vvvvv light pink spotting with flesh like tissues in the toilet. I thought maybe AF finally arrived. I put a tampon in and their was only a little of light pink/ light brown spotting with a little CM. I went to bed with no tampon and when I woke up to pee again I had light pink when I wiped. nothing else since then.... I'm a little confused.. I ovulated July 3 so it's a little too late for implantation bleeding. What do you think? miscarriage? AF? early pregnancy spotting??