Your hearing is definitely not damaged. However, ear fullness is your body's way to signal to you that whatever it is you did to cause it is NOT ok. Many people on this forum described getting T spikes and ear fullness as a result of doing something that a healthy person would not even notice. Our ears have been compromised, and now innocent things can cause a setback. These setbacks interfere with our recovery and can even cause temporary or permanent spikes.
To summarize, you are probably going to be ok, but it might be a good idea to ensure that your ears are not exposed to moderate noises like the one that caused you to feel ear fullness. These moderate noises probably include the sounds made by vacuum cleaners, hair dryers, blenders, etc.