Help! Positive OPK but taking trigger shot tomorrow?!?

Faith • Wife and mother to an angel baby now blessed with my 🌈 🤰🏼August 2023

Hi!! So this is my first round taking letrozole and I went in for my mid line ultrasound and I have a 17.54mm follicle on my left ovary and my doctor prescribed me ovidrel and told me to take it tomorrow night and BD on Saturday and Sunday but I just took this opk and I don’t really know what to do. I don’t think it’s positive yet but it might be tomorrow?