Your mask should not cause pain or discomfort if it is sized correctly and fitted properly. If irritation or sores develop, overtightening your mask is often the culprit.
It's also possible that your mask cushions may be worn out and need replacement. Over time, mask cushions deteriorate and can cause air leakage.
If you are having problems with pressure on the bridge of your nose, using Boomerang Gel Pads may solve the problem.