Sinuses, Eczema and Teething - OH MY!

You may or may not be aware of a few challenges we have been facing with Austin's health. Since he was born he started vomiting up his milk so around 8 weeks we slowly started giving him soy formula and some rice cereal mixed in to all his bottles. He also had a few rashes on his face and head.
Over some time and moving slowly to soy formula only at 5 months old, Austin is no longer spitting up to the point of vomit!! WHOHOO! However his skin is a whole other issue. They call eczema Baby Asthma. It is basically the way a baby shows he has allergies and asthma. We started using creams on him at the 8 week mark as well and they did help a little. But as he has gotten bigger, the rashes have drastically intensified.
Yesterday I hit a breaking point and took him to the pediatrician again, only 1 months since his 6 month check up. At his 6 month appt the pedi prescribed a stronger cream for his rashes and VaniCream to put all over him to help his dryness. It hasn't helped. He is so bad and literally scratching all his skin off.
IT MAKES ME CRY!
She said it is time to take him to a dermatologist, so I sit and wait for a call back to make the appointment. He also has a bad fungal thing happening in his private area that she gave us a prescription for. Oh and on top of that, his nose has been running for 2 months straight. We started Benedryl a month ago and that is helping but not much. He also has a sinus infection and we have some antibiotics for that now.
MY POOR BABY! OH and on top of all of that, he is teething. He wakes up every night now screaming and can't fall back asleep because of the pain. We give him these little dissolving tablets to help but they don't seem to do much good. I also tried giving him some Baby Tylenol to help with the pain, still no luck. Finally we gave him a small bottle and J took over around 2:00am because I am still sick and not getting any sleep.
I hit another breaking point this morning when my supervisor looked at me and said, Oh no you are still sick! I just cried and said, I am just so tired and upset about my baby boy. I hate crying at work.
Let's hope we can figure something out soon for Austin. PLEASE GOD HELP US! Help ME!