PFO questions

I found this site while searching information on PFO. I have been a migraine sufferer for years but recently started have vertigo symptoms before a migraine. I went to my headache doctor and he sent me for a MRi and an ECHO(TEE). I had a spot show up on a MRI seven years ago that we are not sure what has caused it and the recent MRI showed little changes. The echo(TEE) showed I have PFO. I have met with a cardiologist that said the evidence was not there for closure but my headache doctor thinks the mystery spot on my MRI might be something that would make me a candidate for closure. I find out tomorrow what the headache dr, cardiologist and neurologist decide. Well needless to say after a lot of searching I am not sure what I should do if they suggest we go forward with the closure. I have read that people have had to have them removed and started having new problems due to the device. After reading other people's symptoms I realized that my fatigue and some shortness a breath might not just be from getting older. I also have started having an aura with my vertigo headache that I don't normally have with my migraines. It is hard to know what symptoms to share at my visits and I tend to think of them later when I am at home experiencing them.
Any advice or questions I should ask my doctor would be appreciated. I feel like I rambled but it seems like a lot of you feel or have felt like me at one time.
Thanks!