I've had it all my life too. Don't worry too much, at least now you know what the problem is. The main effect I think it has had on me is tiredness and of course coughing, I really don't mind or notice the coughing.
But for tiredness, let yourself rest, go to bed at 6pm as soon as you get through the door if you need to or all day if you have to and you can and never feel bad about it.
I have never been able to have a full time job because I get too tired, when I realised it was never going to work and I stopped being so hard on myself things were better all round. So maybe you'll have to make some adjustments to your owrk schedule, now or some time in the future.
Having mentioned resting, one thing that worked amazingly well, and made me feel more normal than I ever have in my life before, energetic even, was the NHS rehab program. They do one hour of information and talks, and one hour of exercise, twice a week. As a newly diagnosed person you will probably benefit greatly from the information, you will get a chance to talk to a physio who knows about lung conditions, though they might not be an expert in bronchiectasis.
Then the excercise class itself is great. I was expecting somethng like light aerobics but it's just like having your own personal trainer, they make you work as hard as you possiby can and get your heart rate up with lots of cardio as well as recommending weight machines. I was nervous as I knew I would be exhausted the rest of the day and the whole of the next, and that did happen but miraculously after a couple of weeks I was just tired directly after, and felt so much better.
So please ask about that, try and get your specialist of GP to refer you, there is a bit of a waiting list usually.
And I second the use of a salt pipe, I use a nebuliser for saline, it does the same job. I found it appallingly hard to do my physio until I got that and it really helped.
xxx