discomfort or sickness with physical activity

When I do physical things I literally feel sick, like I could throw up at times or I am having angina or something going on. Like this discomfort in my body just hits me at times, and it will be mostly in my upper body, and will make me gag or just be really uncomfortable. Anyone else??? I repeat it constantly but I keep feeling like something else is going on with me despite all the testing I have had done.

I also am quite intolerant to exercise. Even walking makes me puke now, especially in warm weather

It happens to me all the time,  i also feel severely unwell during it,  like im sick