I've had bad sinuse/allergies for 2 months now. i lay down and i wheeze loud when i exhale or laugh. is this bad??

Unfortunately, yes: You may have what is called :Airway Hyper-responsiveness, in other words, twitchy lower airways (bronchi) secondary to what's going on in the upper airways, nose and sinuses, you need to see your doctor for assessment, ? Rx medications to take care of your sinus problems, and wheezing, or refer you to an allergist/immunologist. Check aaaai.org or acaai.org for an allergist in your area, goodluck