birth control
"I have been on Nuvaring for 4 months.  My ob/gyn switched me from the patch to Nuvaring because I was getting estrogen-withdrawal migraines when I took the patch off.  I use the ring for 4 weeks, then take it out for 4 days to minimize any headaches.  At first, my headaches got worse -- I was having them when the ring was in and when it was out.  The ring has a lower dose of estrogen than the patch (which is quite high) and my body was going through estrogen withdrawal.  I also had a fair amount of breakthrough bleeding while the ring was in longer periods initially.  However, after about 3 months of erratic headaches, things seem to be settling down. My periods are lighter (or non-existent) and the ring is very easy to use."