Tiny clots in implantation bleeding? How?

I think I've experienced implantation bleeding. I'm praying I did. Light pink spotting for 24 hours, only visible when I wiped. Never in my underwear. Well the last couple hours of spotting, I had a reddish little vessel(clot). Very small. Is that normal? Anyone experienced very light clotting in implantation bleeding? The tiny clot came out after me and my SO had sex. My period is due in 9 days. Spotting started 2 days ago and Ended yesterday.

*i have a 30-34 day cycle

*i missed a whole period(for the 1st time in my period history) in October.

In November, my period only lasted 4 days(record short, has always been 6 days.)