What's happening?

Kristen
So today I was spotting a little. No cramps, no pain, nothing but a little blood in my underwear. It is 2 weeks and 1 day since the start of my last period. I've been off the pill since the first part of August. And I have Hashimoto's (hypothyroidism). We've been super busy this month and have only had sex once since my period. I've never in my entire life spotted between my periods. What is going on? Am I just ovulating?