For 3 Weeks, My Right Eye Has Been Tearing Periodically

For 3 weeks, my right eye has been tearing periodically throughout the day. It does not matter if I am inside or outside. When I awake in the AM, there feels like filmy stuff is in the eye but I can't get it out. The eye just waters & collects closest to the nose. I blot the water away. I see no color on the tissue. Last night the sinuses around the eye started hurting. The eye is not watering but it hurts around the eye, nose, back toward ear on the side. Do I use an eye drop, cold pack, heat, nasal spray? I need to take a flight tomorrow, Saturday. Is that ok?