Hello @andrewbradlyn,
It looks like this is your first post, so an official Welcome is in order.
Welcome to Mayo Connect!
You certainly have a lot to consider now that you know you have all these diagnoses PLUS a new diagnosis, PFO (patent foramen ovale). How fortunate you have not had any negative effects (that you know of) especially a stroke. But you must be anxious knowing you have it now. I don't know if you have had a chance to poke around here on Connect or not, but here is a helpful Mayo Clinic article regarding PFO.
https://www.mayoclinic.org/diseases-conditions/patent-foramen-ovale/symptoms-causes/syc-20353487
While we wait for others who may be able to share whether they have HOCM, Afib and PFO, I am going to go out on a limb and assume your cardiologist is up-to-date with the latest information in HOCM and Camzyos? Camzyos has a list of interactions and side effects, and knowing you have the PFO is certainly something a cardiologist would want to take into consideration as you begin treatment for HCOM.
Being educated about what you have is important, as you need to be your own best advocate.
May I ask how long you have known you have HOCM? When is your follow-up appointment? Have you prepared a list of questions to ask?