Eleven Years post op

It has been eleven years since my last open heart surgery. since then i have had one ablation to do a minor fix but other than that the meds have generally been doing a fair job. the last almost two years i have been noticing more issues rising like arrhythmias and dizziness, skipped or added beats. but the last few months even with getting out on the weekends regularly and going on walks in just not to where i used to be. i get winded so much faster, my heart pounds carrying things in from the car but not every time. i know if i am stressed that doesnt help either. im not blind to the fact that since my surgery in 2014 i have gained about 40 pounds but generally have been the same weight for the last two years so that shouldn't be too much of a change for my heart.. unless its become a strain.. but i dont know. i jusknow that i have a stress test coming up on the first and i am not looking forward to that and tB'she stress that comes with it.B's boss Had a stress test done a month or so ago and he said he only lasted about 10 minutes before they pulled him iff the machine. i woukd hope i can last maybe that long but it really depends on hiw my body reacts that day and what they have planned. i havent done a stress test since before my surgery. i have my cardiology appointment the following week for results and an echo. they are always polite but i have these anxieties that they will take one look at me and my results and chalk it up to me being an overweight woman, and that it will be the whole reason my heart isnt doing what it us supposed to be doing, not that the valve has lasted longer than estimated. last year they saw a slight change but decided nothing should be done yet so that technology can improve. even last year we thought that was odd but still kinda made sense.