CLOMID 1st Round

Hi guys,

I am put on clomid from CD 5 to 9. Just started my first round this month. Normally I ovulate late, around CD 18, I started testing early and all my OPKs came low, it was a bith higher on CD 15, but still not signalising ovulation, when I tested again on CD 16 the line was so faint that it was barely there, so I worried that I will not be ovulating. Yesterday CD 17 I went to my OBGYN to check if I have any follicules forming he saw that I already did have an ovulation, I told him that all my tests came negative, but ovulation was obvious, he said that it’s possible for me to had ovulated earlier this cycle becuase of clomid. Has anyone else had negative OPKs but ended up ovulating earlier?