TTC and AF isn't till October 20th question on spotting

Liz • TTC baby #1

TTC and AF isn't till October 20th question is yesterday I woke up to brown and light pink  blood when I wipped. From reading today and yesterday are my most fertile and when I should ovulate.  Today I woke up to wiping darker blood and I'm wearing a pad. I also noticed some small blood clots while wiping. Is this a miscarriage even though my period is not even close to late? Thanks for your help!