OPK question!!

Maya

I know this OPK isn’t that dark but it’s the darkest I’ve gotten and I’m on CD 21! I’m supposed to have a 33 day cycle. I’ve been testing since CD 8 and nothing!! Can this be considered positive or close to it? And another question, (I’m so sorry lol I’m new to OPKs) how long after a positive OPK do you ovulate

Every other day leading up to today:

Today

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