Sleep Apnea is a condition that occurs during sleep. The sleep breathing pattern can be irregular and some times due to multiple factors, it can cause a heart attack or angina (a cause of chest pain).

Yes, it can, depending on the pressure that you are receiving on the cpap.

Yes it can

Hello!
As you are using CPAP machine, please follow with your sleep doctor to make sure it is at optimal pressure and sleep apnea is being treated well. Follow with your primary care physician and cardiologist for evaluation of chest pain. Encourage healthy lifestyle habits to maintain optimal weight.

Sleep apnea would never cause chest pains.It also would not cause daytime or weak breathing symptoms unless it has caused chronic respiratory failure which is somewhat unusual. You should consult yo usual physician for evaluation