Aspirin Lo-Dose and hunch

Resumed taking 81 mg of aspirin as recommended by the Dr after a minor MI three years ago. Just realized that the same symptoms I had with shortness of breath and weakness I had experienced then until I stopped at the time after a year on the aspirin because I was tired of the bruising and upper GI problems and vision disturbance, the aspirin is probably the culprit of my extreme shortness of breath also! I ran out of or forgot to load my weekly vitamin containers with the aspirin I started using just two days ago and have experienced much relief from the extreme breathlessness! I am going to conduct an experiment and go back on the aspirin in a couple of days to see if my hunch is right, I think this may be an answer to prayer for me as I was on the verge several times of calling my Dr the last few days it was so severe.