Could I be pregnant if I had sex morning of getting a positive later that evening?

Erica • 26,recently married, have two step boys. Ttc#1
I'm doing everything I can, having PCOS and not ovulating regularly, to have a baby. SO came on to me in the morning, I tested later in the evening with the strongest positive opk, but he was not in the mood. Then I felt defeated which started and argument. So now I sit today trying to keep my mind occupied but I'm getting down now thinking we missed our opportunity.

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