Make an appointment with an audiologist and have your hearing tested.
I have partial hearing loss in my left ear in the higher ranges (>2000hz) and like many others with slight, mild or moderate hearing loss struggle in environments where there is background noise... Restaurants, even an open window when the TV is on or a heater.
Have your hearing checked (if you're in sydney go to Macquarie uni hearing hub I think is free, or get a referral). You could have some hearing difficulty. It's definitely worth knowing!