I found out the hard way that stopping cold turkey is a bad idea while on HRT. I was on Climera for about three months when I was removed abruptly because I still had my uterus. Soon after I was getting these bad migraines that lasted three days at a time I had to stay in bed during these episodes. I couldn't see any lights. I was totally incapacitated. And any pain killers didn't help. Being on Climera did help with the hot flashes but now I refuse to go on any HRT'S. I am now 73 and my menopause symptoms are more manageable. I found exercises, meditation have help me to greatly.