Last night I was having problems with breathing. I haven't been eating much and I've been in a sad mood. When I burp or yawn I feel like I can breath better. I've also been crying some which usually ends up in a bad runny nose for me. Could my breathing problem been caused by all the mucus? I also tried burping and yawning but it only helped a little.

You could be having allergies or something from foods you eat. Try watching what you have eaten right before you feel this way. I have shorteness of breath and I am not sure what it is from but I think it is partly from too much Pepsi and too much dairy.
It could be sinuses.
If it is related to your sadness it might possibly be anxiety attacks

You could be having allergies or something from foods you eat. Try watching what you have eaten right before you feel this way. I have shorteness of breath and I am not sure what it is from but I think it is partly from too much Pepsi and too much dairy.
It could be sinuses.

maybe it is from the pepsi and dairy.
I love dairy food so I eat a lot of it and I drink
a lot of pepsi. I also have bad allergies. But thanks
again. C=