I would definitely get this checked out. It sounds like you have a chronic sinus problem (that's what causes the cheek pain and probably the eye and head pain too). This needs to be investigated properly and sorted. Not because it's going to kill you or anything but because it's a real annoyance for you and can probably be cured. There are a variety of treatments from steroid sprays to nose and sinus surgery that can be contemplated but only an Ear Nose and Throat specialist can give definitive advice.