Hi i am 56yrs old and have had ms for 10yrs, i have been on tysabri for 2yrs now and two months ago I had a heart attack ,angina,and a stent. Since then i have had pain and tight ness in my chest the angina spray seems to help, i also have pain from my groin to my calf muscle which is quite severe, could this all be side affects of tysabri ??thank you Diane