i have problem of delayed periods ....and m taking medicine overall contraceptive pills for 21 days...suggested by my gaynec ..is it effective to regulize my periods...i am 22 yr old unmarried girl...my sonological reports are normal only U.B. wall is thick and irregular is it a bigger problem or causes for infertility in future....i heared dat if a girl take contraceptive pills den she will suffer prob for pregnency...