On March 12, I caught a cold from my little brother and had it for about two days. After that, the typical symptoms of the cold itself (headache, fever, nausea, etc.) went away, but the dry cough still remained. Thinking that it was just part of the infection that still remained, I decided to take Robitussin to release all the mucus that was in my chest. However, after about a week of taking it, there was no change whatsoever. In addition to the barking, dry, nonproductive cough, I also have a terrible shortness of breath that affects me the whole day, even when I try to sleep. So after I took the Robitussin and saw that it didn't work, I decided to go to the doctor to see what was wrong. The doctor gave me an oxygen and the oxygen level was perfectly fine. She checked my lungs and said they sounded clear. She then told me that maybe I just thought I wasn't getting enough air when actually I was, and prescribed me amoxicillin. Again, after two weeks of taking it, there was absolutely no change in the symptoms. So after that visit, I decided to wait a little bit to see if maybe by trying to get my mind off it the symptoms would be alleviated a bit. However, they never got better so I decided to see the doctor a second time. This time, the doctor checked my lungs both with the stethoscope and a chest x-ray and gave me a blood count. All of them proved to be fine and he was even able to rule out pneumonia. Thinking it might have been residual asthma from when I was little, (I used to get the croup often when I was younger) he gave me a Proventil albuterol inhaler to use for about a week and then he would call to see how I was. After about 4 days of using it, the results proved to be fruitless once again. The doctor told me that the inhaler was not working because it was supposed to provide almost immediately. I went to the doctor again for the third time and this time he thought it could be caused by allergies. He gave me a list allergens that could be causing my symptoms and ways to diminish them as much as possible. He also gave me Clarinex to take for two weeks but that didn't work either. However, a little after taking the Clarinex, the symptoms seemed to subside a bit probably because it's summer vacation and I was somewhat able to take my mind off them. Now, something that I find odd is the fact that my symptoms tend to get worse whenever I go to my dad's house. Not long ago, I found out that the air vents in his house had over two inches of mold and the guy that repaired the AC said that that's what could be causing my symptoms. After that, my dad got the air cleaned and installed an ion light. I haven't been there since, so I won't know how I feel until I go there again. When I went back to my house however, the symptoms still remained with the severity of when I had them at my dad's house. Ever since, I struggle to get a full breath of air, I still have the same barking dry cough, and my nose is always very congested. I have tried other online health forums to get answers and the only thing I have gotten is advertising. I don't know when I will have my next doctor's appointment so any help as to what I should do for right now and what this problem might be is greatly appreciated. Just to recap, my symptoms are:
- Constant, barking dry cough ( I don't really get the feeling to cough, I just cough because I feel that's there's a lot of congestion in my chest and I have the urge to cough it out, but it never does.)
- Constant nose congestion
- Chest tightness and trouble breathing, I feel like I have to yawn or move in a certain position to get a full breath and it gets worse when I'm in an inclined position or trying to sleep.
- Lots of trouble sleeping due to the constant shortness of breath.

Again, any help is highly appreciated. I am desperate for help and it is 2:30 in the morning right now and I haven't been able to sleep due to this. If anybody has any information as to what this is, what it is caused by, and what I can do in the meantime to suppress these symptoms before I go to the doctor's office again, please tell me, it is strongly appreciated. Thank you very much.