I have also been on the pill for 8 years and if you have been on it for that LONG then you should be fine. As long as you took your pill the next day. Your body has had these pills in their for 8 years so missing one really is not that big of a deal, its when you mis 3-4 in a row and never go back and double up and take any of them, THEN you may have to worry.
Your hormones maybe acting up because of your menestrul *sp* cycle just passing, the older we get the different things that start changing in our bodies. I NEVER use to get cramps when I got my period, but since last year I have started getting cramps before my period comes
, I hate it. My doctor told me my body has changed and everything is okay, because I thought something was wrong with me having cramps before my period
But, if you want to ease your mind make an appointment with your doctor to see what he/she thinks. I know I can call my pharmacy and sometimes they will have the answer.