Good Morning, BPinBama ~ I am sorry that you are not getting the medical care that you should be gettting. IF you are BP, my guess is that if you get on the right meds to get you out of this depression then your appetite will pick up an things should improve. However, your doctor seems to have mismanaged your BP and shame on him for not referring you to a board certified psychiatrist before this time.
The antidepressants will only throw you into a mania and if I am not mistaken, any cortisteriod will do the same. (I believe that Patty Duke-Austin's BP was diagnosed when she was given some cortisone shot for asthma which threw her into a full blown mania

) So your doctor suggesting such a thing raises BIG red flags.
I think that you should do anything you can do to see if you can move that appointment up so that you can be diagnosed and treated much sooner. Certainly if you are having thoughts of either hurting yourself or others you should go to the ER and tell them so and be admitted which will be the fastest way to be treated and once you are discharged you will have to have a followup appointment with a psychiatrist within a few days. So that would be your quickest way of getting the help that you need.
You sound as if you are cycling and that your mania is getting worse. Please do something while you can....if this gets worse you won't know what to do. I would also instruct your daughter or anbody in the household that if you get violent in anyway, instruct them to call the authorities and tell them that you have BP and they will take you in to be evaluated immediately.
Hang in there and keep on calling any resources that you can to get some help. Do you have a Mental Health Clinic in your area that perhaps can see you even sooner??? Explain your history and your incident with the gun. They will have to accommodate you earlier.
Good luck and let us know how you are doing....Goody