Slanham, sorry you didn't get any replies. I would definitely continue with the HRT but I wonder if your regime is progesterone heavy. The progesterone component of HRT is often responsible for migraines and headaches so if you have symptom relief on the 25mcg patch, could you reduce the progesterone dose to 5mg? You would need to have regular TVS uterine scans but that is no bad thing because it checks overall womb health.