Can the feeling of having trouble breathing be related to a brain tumor?

Unlikely alone. This symptom is not related to brain cancer unless the patient has such advanced brain cancer that they are effected by multiple other serious problems like altered consciousness and paralysis. As an isolated symptom this would be very unlikely, particularly if we are referring to you.

Related Questions

Will you stop breathing if you have a brain tumor?

Possibly. It depends on the location of the brain tumor. There are certain brain tumors that are located next to vital centers in the brain that control breathing (brainstem centers). These areas can be affected and may lead to cessation of breathing. Also, if a brain tumor in other areas gets large enough that there is pressure and brainstem compression breathing can also stop. Read more...
Brain tumor. Loss of breathing with a brain tumor only occurs at a very late stage of tumor development, only when tumors become very large and cause compression of important structures at the base of the brain. Read more...