Memphis
Play it by EAR
Obviously if your not well do not fly but if your with an instructor and do not intend to go high you maybe ok.
A few snap rolls will soon clear the sinuses out
High is different I can remember an airways trip to Scotland with the remnants of a cold! Joy my ears cleared all the way up to 10K but on the way down the pain was excruciating especially the last few thousand feet so beware.
Pace