Hives 5 months post partum

Hi guys. It has been 5+ months since I gave birth. I am having a very severe case of Hives. I have seen 6 doctors (including Skin Centre) and they have ruled it out as DUE TO STRESS. I am caring for my 5+ month old son on my own while I work from home during office hours. It has been over a month since I am having these hives and some days, it is really really bad. I am desperate to find a solution. Any of you guys have encountered this and how did you guys get cured? It is easy to say don't be stressed but if I had more help, I wouldn't have to but it is not an option now. I have even resigned my job and serving notice period now so that I will be less stressed up with hopes that the hives go away. 3 months post partum, my grandmother who I am VERY VERY close with passed away too. I feel like my life is a mess and emotionally i can't cope. I do not know what else I can do to help myself.