Diving with Hearing Loss

With whom can I check whether or not I can learn to dive? Are there any tests needed to know that?

The ENT advised me against swimming (or learning to swim, to be specific) as I often get ear infections, or to block my ear if I don’t follow his advice and get into the water.
(I still get ear infections in any case even when I keep my ears away from water so I don’t follow his advice :DDD)

Did you get the vaccine against pneumococcus? It is not a guarantee, but it may be helpful if you have frequent bacterial otitis media. PCV is more recommended, especially PCV - better is this which covers more types of bacteria:

I don’t know if you had beed vaccinated by Hib/flu vaccine.

No, I didn’t. How helpful is it?

I’ve never considered having a flu vaccine. Is it worth it?

The effectiveness in adults in preventing recurrent otitis media is less well-evidenced because children are the main group studied. However, if it is practically harmless compared to the above disease, it is worth considering.

I am CI user and strongly consider PPV-21 vaccine for myself.

Regarding otitis media (if it is the ear infection you mentioned), it depends on the usual cause of your illness—viral or bacterial.
However, there is always a general health benefit, particularly before the season, a planned pregnancy, or in older people…