My immune system is deficient in the 1gG3 classification, please advise?

Chest congestion, sinus congestion, inner ear canal has fluid moving around.

My immune system is deficient in the 1gG3 classification. Currently, I cough and have to hold my chest because of the pain. I seem to be on a 3-4 week cycle of getting sick. I call my asthma doctor who prescribes an antibiotic over the internet. I had this 3 weeks ago but it was better for a week or so after an antibiotic and prednizone. Getting into the doctor takes days and I don’t trust the urgent care facilities. The doctors seem to be inexperienced. Should I go to the emergency room this time? How do I know if I am in real danger of the congestion affecting my ability to live?