Ms patient. vertigo, dizzy eyes, pounding heart and extreme fatigue where breathing feels like work. how likely is it for ms to affect breathing/heart?

Not likely: Multiple sclerosis does not directly affect breathing or the heart, but it is well known that ms can cause profound fatigue.

Not usual: MS doesn't directly affect heart or lung, but Copaxone (glatiramer) injection reactions can create flushing, chest heaviness, and general malaise, lasting about 10-15 minutes. You might also be reacting to use of triptans, so spend some time with your doctor and source out answers.