This calls for some tracheal first aid such as irrigating the stoma more frequently until the crust loosens up and becomes dislodged with coughing. Wheezing which is new in onset and noisy breathing is also usually caused by a crust narrowing the airway. You know what to do here. Lastly, there is such a thing as having no problems and doing just fine. Remember that your laryngeal cancer puts you in a higher risk group for lung cancer, which can often get to a very advanced stage without the slightest hint of a symptom.
Bottom line is an x-ray once a year.
Now for my disclaimer. Many of these breathing problems can mimic more serious health problems having to do with the lungs or the heart. The first time I took what was to be a relaxing bath, after my surgery, was when we moved to our new home, after getting married in 1998. I couldn't wait to get everything in place, unpacked, and put up, so I could try out that beautiful tub, with my favorite aromatherapy bubble bath and a tub full of very warm snugly water. I slid my tired aches and sore muscles down into what was the most comforting feeling I had had in weeks.