How have I been sick for so long?

I have been sick since January. I was coughing severely, with all sorts of severe viral cold like symptoms. I went to the Dr and she put me on a Zpack and albuterol ipratropium nebulizer treatments, on top of prednisone tablets. She said I had some kind of severe bronchitis. I was coughing so roughly that I was throwing up and urinating all over myself. That didn't work. Went back to the Dr (saw someone else) He diagnosed me with severe asthma (my chest and back felt bruised at this point), pulled me off the prednisone, had me start taking steroid inhalants plus the nebulizer treatments. He said I did have a virus at that point, but he was way entirely more concerned about the condition of my lungs. Saw him again for a follow up, and my lungs sounded much better (still some wheezing) but now I have a nasty upper respiratory infection, my left ear has been plugged for over a week and was hurting when I saw him (is still currently plugged), coughing, snotting, etc. He prescribed me amoxicillin to try and clear that up. I have also had laryngitis for about a month and a half now now, and I'm starting to forget what my normal voice sounds like. I'm still sick, on day 4 of amoxicillin, and now Im starting to think I've fractured a back lower rib from the insane coughing I'm still doing. (It really hurts in one spot, and I can actually pinpoint it with my finger tip) I am just wondering how on earth this is possible to be this sick for 3 months. I have 2 children and am currently 7 months pregnant, my oldest daughter is in Kindergarten (Coodie central) and I understand my immune system is low from the pregnancy, but honestly? I think I'm going to lose it. Is there anything else I can possibly do to try and keep my sanity?