Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
Its likely that these headaches
could be due to blood pressure as your BP is still not under control. Instead of further increasing the dose of the medication that you are already taking twice a day it would be advisable to add on a new medicine such as verapamil
which will help.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.