TMI TMI what is this??

I'm still in my TWW, and when I wiped this morning I saw this. Is this the start of AF? I know it's too dark for implantation bleeding.. or is it? I honestly thought I ovulated this past weekend so... I'm a little confused. Could it be ovulation spotting?! It's a little stretchy and the rest of the discharge around the dark part was very clear and sticky. PLEASE ANSWER! Thanks!!!!