I have no problems so far as long as take the pill. They say you should not take more than one year because of side effects. Every time I try to go of them hot and cold flashes are in possible to deal with. I have been off for about two months now extremely difficult dealing with. I will break out in a sweat in public. My face will be dripping wet and body then get cold afterwards . How long will this last continue it has been 17 years since operation?