I have just come off the pill as I am trying to get pregnant but I was on it for about 14 years. I never suffered any nausea, head aches, weight gain or other side effects they say can happen and the most positive points were my periods were much lighter and the period pains weren't half as bad!!
I'm not saying you will be the same as me as everybody reacts differently to different medications but the pill worked for me.
Hope this helps?!