so sorry that these setbacks are occurring but it sounds like you are on your toes keeping ahead.
For my story, i have had the visual auras since my first pregnancy. the ophthalmic/ neurologist said they were hormones related ( and would go away after the baby was born ). Years later they came back and were frequent after my heart surgery. ( i keep recording them. ) Fortunately I only have the auras and no pain. They are disruptive for driving , reading etc. the doctor said that since i have no pain, no treatment necessary: just "enjoy my own private psychedelic show "Hopefully your migraines will lessen with time??Finding the right balance of medicines is tricky. Please check with your cardiologist before taking anything new ( including supplements vitamins etc) as your heart health takes priority.( for example: your heart doctor may want you take antibiotics before dental care).