I think everybody has this problem at some point. PPL shouldn't matter too much as you're only going up to something like 3000ft whereas the pressure in an airliner is 8000ft (though obviously I'm not a doctor so its up to you).
Strangely though I can now pop my ears my moving something in them (hear a little clicking sound) so thats nice to have if not a little odd (I can also move my ears so maybe its related to that).