It could be as simple as equalizing more often. No need yet to buy ear plugs before trying this.
Equalize very often, specialy right after breaking the surface. Equalize every meter for the first 10 meters.
DON'T WAIT 'TILL YOU FEEL THE NEED TO EQUALIZE !!
Descent very slowly ... it doesn't really matter if you're the last one reaching the bottom !!!
Remember you open water course ? 2 atm from 0-10 meters. 3 atm from 10-20 metres, 4 atm from 20-30 meters.
From 0 to 10 meters, you go from 1 to 2 atm ... you
double the pressure
From 10 to 20 meters, you go from 2 to 3 atm ...+ 1/2
From 20 to 30 meters, 3 to 4 atm ... + 1/3
This is why either descending or ascending, the "
critical " depth is 0 to 10 meters
Remember ... Descend slowly, specially the first 10 meters, and equalize very often.
This should solve your problem. If not, consult your physician !!!!
Hoping this will help