I've been having a hard time breathing for about a week now. Every time I try to lie down, I start coughing a lot and feel like there's something stuck in my lungs, and my cough sounds whooshy. I noticed that if I sleep on an incline, I manage to get some rest. I'm a bit overweight, and my dad used to have sleep apnea, so I'm worried it might be something like that. Can you let me know what might be going on and if there's anything specific I should be doing or checking for?