Hi, I Have Allergies, And Been Getting Allergy Injections, For

Hi, I have allergies, and been getting allergy injections, for almost ten years now, I have phlem stuck in my throat seems like all the time, except when I get the injection. I have been trying many different remedies for this, but I cannot seem to find the good one that works.
Oh, my allergy injections are every two weeks. Iam diabetic hip and asthma