I have faced prolonged period issue in some month...sometime I take progestone to stop .my ultrasound says I have a fibroid of 2 cm..but when I asked any doctor is it becaz of that...they always said no..this time doctor suggested me to do Vitamin D test...where we got the it's 9.1 which is significantly low ..I have read somewhere that very low vitamin D leads to hormonal imbalances which cause periods issue ..I am still confused what is the exact cause of happening such...if any one can clear my confusion.