Stress Test Question

Has anyone had to do a stress test without the dye while they had Lyme Disease. I'm a little nervous I have to take one next week to check my heart valves I have Mitral Valve Prolaspe , Had it way before Lyme. Now next week my doctor wants to do a Stress test and an echo in between the test to check the heart and valve. Has anyone else had to do this?
I hope I have the strength to handle it.

I have had (2) stress tests both with dye while I knew I had Lyme.  Was not bad.  I told them that I did not have the "energy" as I used to have and they were very good about the whole thing.  I was a little out of breath, but not bad and they watch everything..I am sure you will be just fine!   Of course the echo is not a problem as you just lay there!

Thanks. : )