Yes it's quite normal. As most people here will tell you, there are different methods that help different folks. Muccinex is very helpful for me, drinking water (sometimes hot water w lemon and ginger) and I find a big impact is what I eat and making sure I exercise.
There are great reference materials on how to help cough up the phlegm as well. The sooner you can get it up the better as letting it build up can lead to other complications not to mention the discomfort. Good luck.

I just saw your response - what did the inhaler do for you and how frequently did you use it...........

It was advertised on Facebook along with a salt lamp which I haven't tried

Milliemunchkin where did you find that inhaler?

Yes, sometimes no.