Hi lavender
I'm in my mid-30s, had a hearing aid since I was 14 (two since I was 23).
Welcome to the club!
Have you had moulds of your ears taken? After that you should get the aids and your earmoulds (assuming behind-the-ear aids) in a couple weeks. With luck you'll get to choose what colour you want - if they didn't ask, do ask what other colour aids they have, as black/silver/red looks so much cooler - like designer glasses.
If the aids are still uncomfortable after a week or so, do go back and get the earmoulds filed down to fit properly, and don't be embarrassed about doing this a few times - if the aids hurt, you won't wear them!
As you've already discovered, understanding people when there's no background noise is so much easier than when there is - and aids will help but there's still that difference compared to others.
Lastly - if you need more help at work, like an amplified phone, or a headset to cut out background, or a better mobile phone that plugs into yout aids, have a look at connevans.co.uk and ask questions, and also look into Access to Work who should pay for anything expensive.
Happy to answer any questions.