OPK/Ovulation Help

Ladies, can anyone please give me some advice on what y’all think is going on. I ovulate on my own every month around CD 14-16. Due to other fertility issues my doctor prescribed clomid for me. I took it last month and ovulated on CD15. I got a positive OPK on CD13. Well this month I am now on CD18 and this is what my OPKs are looking like. The bottom is about 15 min ago. The next one from the bottom was yesterday around 6pm. Also every month when I ovulate I have very intense Ovulation pain. I haven’t felt anything at all this month. Please help. TIA