I do know that aneurysms are much easier to treat and remove than they were years ago now that we have micro surgery techniques.
They run in my family and many years ago the surgery was only invasive and my sister did not survive it. That was nearly 30 years ago and now it is almost like outpatient surgery in many cases from what I understand.
I hope it helps your headaches and maybe some of your other symptoms if you have it treated.
You did the right thing of getting out of that relationship. God bless you dear, I'll keep you in my prayers.