Nervous Wreck

Elijah is growing very fast, he's 6 weeks old today and he is getting cuter and cuter every day. He has been smiling a ton lately, he loves to be talked to. He is really happy, but he's been having some issues. He seems to have a hard time breathing lately. When he eats, he makes this high pitched wheezing noise like he can't get air, then he swollows a ton of air through his nose, which makes it hard to swallow food, which makes him very frustrated, and he has to burp after just a few seconds of eating. Very frustrating-especially when I am nursing in front of people. He also does not cry loud. He used to-but now you can be sitting right next to him, look at him and realize that he is really upset and you didn't even know. When people hold him or are around him they will always comment about it and how they would freak out if they were his mom and he sounded like that... I have taken him to the doctor twice. The first time I went to this lady who made me feel better about it, but pretty much did nothing. She told me that since he was 3 weeks early his muscle tone in his throat of some flappy thing was not very strong and sometimes it flops over and makes it hard to breathe. SHe gave me a few suggestions and I went on my way. Well, he did not improve and I knew something was very wrong. I took him back to his normal pediatrician and he was very proactive. After explaining to him what happens he listened to him and stated that his cry was the saddest cry he'd ever heard. (I really need to record it). He told me he was pretty worried. He said Eli's chest is perfectly clear, but that there's something going on in his throat. He explained what the other doctor told me, but then he also said he thought it could be other things. The number one thing on his list was acid reflux. Which confused me because Eli has spit up like a total of 5 times since birth. But he said that was not necessarily a symptom. He explained that the acid could be coming up and damaging the vocal cord and also, it would explain the hard time he has nursing and the wheezing noise he makes. So he prescribed prevacid. He also said he could have a hole in the trachial something rather- which is more dangerous. He also suggested Eli go on an oxygen monitor so I could get some sleep at night. He's been taking the prevacid and has been doing better, he eats better, and sleeps better. I'm still not sleeping so well. I sit up and listen to him breathe. When he makes a peep-I freak out, when he doesn't make a peep-I freak out even more. The oxygen monitor tells me that he is consistently getting enough oxygen, but he still sounds like he has labored breathing, or maybe like there is fluid in there or something. He has an appointment with an ear, nose, and throat specialist on wednesday and I am just praying that he will be able to find out what's wrong with the little guy. I know this was very long, I am just hoping someone, anyone will give me some insight.