I had delivery two years back by c-section.My periods started since last eight months.Before marriage they were always on time and bleeding used to happen for five days.But now it happens only for two days.Also I have ongoing treatment for dental fractures due to accident because of which I have been on and off on ketorol painkiller( one tablet weekly thrice during dental sessions)  since last three weeks as prescribed by doctor.My periods are always on time even if bleeding is only for two days.But this time,they started 3 days early...Now on tenth day, I have mild period type of cramps.Please advise.