Suggest Remedy For Irregularity In Periods

I have always had regular periods and never been late unless i've been pregnany! I have been trying to concieve since September and again have had my periods as normal untill the last two months I keep coming on two days late but its not as heavy and I don't have any pain when noramlly I can't bear the pain each month. I'm also sarting to worry as I have a c-section with my first baby and am worried somethings wromg as I was pregnant so quickly before?