Sudden nose pressure on the bridge of nose. went away after a minute. what is this ?

Don't panic: Like it or not, we are unconsciously monitoring our body to alert us to any new or unusual sensation. We try to control everything in our lives but sub-consciously we know that the one thing we really have no control over is the sudden appearance of a catastrophic illness. If your symptom of nose pressure happens repeatedly, or worsens see your Dr. Otherwise it's likely of no significance :)