You likely have a fractured orbital medial wall or orbital floor. With this fracture
, your orbit/eyeball is now connected to your sinuses and nose.
I tell all my patients with fractured orbital walls and floors to avoid blowing their nose and to sneeze w/ the mouth open. Otherwise, you pump air into your eyeball which can lead to more problems. See your doctor or asap to get a ct.
Answer assisted by Jin Packard, Medical Student