OPK question (I find I get more responses in this group)

Ok so I have trouble ovulating, I know this due to having to conceive with Clomid for my 1st child.

We are TTC #2 and I'm on cycle 4 (no clomid)

Does anyone ever have completely negative Opks and then 1 day a strong positive? So no build up just 1 day with a positive? Thanks

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