I'm with my boyfriend for 2 years and have been on the pill microlite for the last 6 months! I always use a condom and haven't missed a pill because have an alarm on my phone every morning to take it. This month my period was lighter and didn't last as long also for the last week my back has been sore but that could be from exercise. I took a pregnancy test the day my period came and it was negative. Has anyone else on the pill have there period change after 6 months?