Hi , I am 32 year old female and have one daughter who is 4 years old . My periods are very normal and always come on time . I am planning to take second chance and that's why my Gynaecologist suggested me for starting folic acid tablet. I am taking the same on almost daily basis . But from last 2 months, I realised my periods are not regular at all , in the month of June it came 10 days after due date and the same is the scene this month , what is the reason why it is happening is this matter of worry , we are trying for second child too .