Thank you for trusting us with your query. I would like you to clarify a few things for me How old are you? What kind of ovarian cancer did you have and what stage was it? How long have you had idiopathic urticaria and Hashimotos thyroidits? which came first? The hives:- are they all over your body, are they painful and itchy or just itchy. if painful, is the pain more than the itching? do they appear after itching or before? do you have any swelling of the tongue, eyes or difficulty breathing? Auto immune disorders can occur in clusters., that is more than one disease. it is basically your immunity attacking cells in your body which are usually harmless. Hashimotos and idiopathic urticaria and two such diseases. Do you have a history of asthma or bronchitis or is this your first time? Stress to the body in the form of illness or severe emotional stress/ anxiety can trigger the urticaria. there are other trigger factors as well, most of which you have taken care of. I would like to add a few more like sunlight, extreme cold, tight clothing. you could be allergic to armour thyroid as well ( if the urticaria started after you started it) or the antibiotic you took for bronchitis. I recommend treatment with antihistamines and to find out trigger factors and exclude them. Bronchitis, if still present , can be treated with bronchodilators and mucolytics, if required. Do try a find a doctor who WILL help. Insist if you have to. I believe in helping the person as a whole and not just treating their symptoms and I m sure you will find some who can help you. don t give up. hope I ve helped. wish you good health. feel free to get back to us if you need further clarification .