confused 😒

Courtney • TTC our 🌈
So I already ovulated this month (around October 5th), I have irregular periods, but today I took a OT and it came back super positive and so did the one I took on Monday evening (October 17th). But I keep getting negative HPTs? Anyone know what could be the cause of that? 
Please no rude comments. Thank you in advance for any input. 
✨Baby dust to all✨