Letrozole and my cycle

Ca

I started my second cycle of Letrozole on the Dec 19 for 5 days ovulated on maybe cd 14 or 16. I haven’t been tempting or anything to confirm. Had positive opk on the cd16 today I’m cd 30 and 14dpo if I ovulated on the cd 16. Normally I ovulate on the cd 14 and my cd28.

I tested and bfn. I’m just not sure if it’s messing up my cycle.

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