I been On birth control pills since 18 yrs and now I am 33 yrs. I take them everyday and don't miss one pill. I only have my period 4 time yrs every 3 months I have period. Well this last pack of pills has the inactive pills . On the second day I suppose to start my period. Well I didn't. I start my period on the 5 pills on inactive pills. Should I do that on the 5 pills on the inactive pills? Is that normal for that to happen?