Negative OPK

Maribel

I had a chemical January 24 been on progestrone since I noticed progesterone delayed my cycle for 6 days I normally show positive on OPK on day 11-12 started checking opk since day 10 they all been negative n would start progestrone again on day 15 but now I keep getting negative opk has this happened to anyone since progestrone does delay ur AF?? Does this mean because of this it will delay O