Hello doctor, im mehr im 22 years old now and not married. I had folic acid tablets for 3 weeks. My periods were regular and never missed before having folic tablets. But, since 2 months (after having folic acid tablets) I had missed periods. Last month I had periods 6 days later from the correct date. And this month it has been 8 days and still missing. Actually I can not understand. And im sure that I am normal as before and nothing went different except having folic acid tablets. Can you solve this please? Thank you! have a nice day!