Hi, I was on letrozole for 5days and have taken ovacare for 18 days, I stopped the ovacare since after ovulation whenever I took it I would feel some bubbles in the lower abdomen, this was causing me discomfort, I dint know whether the bubbles were normal or not since the first time I had used it I never felt like this. Now period has delayed with 3days, what could be the reason?