I'm having some issues at night that have been really concerning me. I keep waking up in the middle of my sleep, feeling breathless and coughing a lot. It's like I can't breathe properly for about half an hour, but then everything goes back to normal, and I can sleep again. I've noticed there's this weird whistling sound coming from my nose when I'm breathing during that time. People have told me I snore really loudly, which gets interrupted by my coughing fits. I went to a general physician before and was on some tablets for a month which seemed to help, but now the problem is back. I'm wondering if I should see a chest specialist. What could be causing all this?

visit a pulmonologist