Question: Trying to conceive

Hi guys new to this needing some advice I had my copper coil removed last month I had my period two weeks before I have always had a period on it but October’s cycle was longer and according to my app my fertile days were 20th—25th I was getting high opk all the way the Through plus faint lines on pregnancy test now nothing? I’ve took a opk today and think it’s positive but not sure anyone else has this?