Could really use your help!

Hey mommas! I need help reading opks. Last cycle I ovulated on cycle day 30, but this cycle my doctor prescribed me 2.5mg of letrozole to induce ovulation sooner. I’m currently on cycle day 26 and have no idea if I have ovulated or if I’m getting closer. I have higher opk tests but they are staying or or will go lower and then go right back up. I’m so confused🥺