I haven't been wearing hearing aids at all unfortunately. This is the first time.
In order to try and help you, please provide some more information. Since 2012 you have had noise-induced tinnitus with hearing loss. I am surprised that you haven't been wearing hearing aids all this time. Back then I will assume that you had tests at ENT which revealed you were hearing impaired. Were you ever referred to an audiologist and advised to wear hearing aids to improve the hearing loss?
Noise-induced tinnitus usually improves with time. Since you now have severe hearing loss in one ear, is this caused by an underlying medical problem within that ear, or has your hearing just got worse over time?
Over the years have you regularly been using headphones, earbuds or headsets? This is important because anyone that has noise-induced tinnitus risks making it worse by using these devices. Not everyone will be affected but many are. If you have been using headphones or earbuds, and your increased hearing loss isn't caused by an underlying medical condition, it's possible the use of headphones or earbuds made your hearing worse.
People that have noise-induced tinnitus often experience some oversensitivity to sound, which is also known as hyperacusis. This can improve by itself over time, or in severe cases treatment is required with the help of white noise generators and counselling with an audiologist.
Are you oversensitive to sound? Does your tinnitus spike? If your tinnitus spikes, this is usually an indication that hyperacusis is present and needs to be treated. Therefore, introducing hearing aids to an auditory system that is oversensitive, whether one is using conventional hearing aids or using BiCROS system, can be problematic because the underlying problem which is having (hyperacusis) oversensitivity to sound needs to be treated.
If you are oversensitive to sound or certain sounds (without using the hearing aids) or experiencing spikes in your tinnitus, my advice is to see an audiologist to get this treated. Please click on the link below and read my post: Hyperacusis, As I See It. It explains oversensitivity to sound in more detail.
All the best,
Michael
Hyperacusis, As I See It | Tinnitus Talk Support Forum