"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."