Advice please ladies

Brenda

I’m confused as to why I tested with an OPK Monday got a peak. Tuesday. Low. And Thursday I have another peak. I’m testing every day bc I’m curios to see results. But I havent had a period since July. August I spotted and had peak OPK. And now this week also spotting started on Sunday. Has anyone encountered this or have any explanations? Last test I took was at 18dpo from aug positive OPK and it was negative. Should I test again or was this spotting a period????