I Went To The Doctor Recenly With What They Said

I went to the doctor recenly with what they said I was having muscular skeletal pain on the right side of my heart. Through testing they found nothing wrong with my heart. However, they did find that I had pneumonia and I had no symptoms of an infection. one month and a half before I developed a acute bronchial infection that I believed was contributed from a new cpap machine I had just started using. They also found (2) nodules in my left lung and referred me to a lung specialist. Within the last couple of days my bowl movement has been loose and light in color. Now, I'm thining it could have come from the antibiotics they gave me for the pneumonia. Sometimes that type of medicine can make me a little diuretic.
So, I was hoping it could be no more than that.