Hope it goes well and there’s every chance it’s easily dealt with. You said (I think) they thought you were a bit hyperthyroid. That’s manageable and will give you racing heart. Even if it’s something else there’s meds and minor surgery that can fix. Lots of options if you catch stuff now! But yeah I have massive health anxiety around heart stuff so I get the stress. 🤞🏻🤞🏻💙