Geritol... painful ovulation

Has this happen to anyone while taking geritol? Bought it 4 cycles ago, first month on it I ovulated early and really painful ovulation cramping for the day, stop using last 2 months and never felt a cramp during ovulation but I know I ovulated (opks) now I'm back to it this cycle, 3 weeks taking it, this time around it didnt make me ovulate early, but I'm cramping pretty bad again, good or bad sign?