Irishgirl, dear, what is happening to you now is called "tunnelvision" your depression is thinking up every reason it can for why you can't get help and why it can keep killing you. School functions are not of the dignity to deny yourself this help. What you are suffering from is a very serious illness dear, not a day at the spa, what it seems your illness is trying to convince you it is equal to. For what ever reason, your husband seems to buy into this story and agree that you should not take your pain so seriously. This line, whether from your depression or others, is rot. dear, I bought into it for a long time, I hate to hear you do the same. Neither you or your children need what it can do to you.
Because we get branded as incompetent, we are very prone to this thinking, Irishgirl. Please do not buy into it and do not let it keep you from getting help. The weight issues can be dealt with later; that is what I am doing now, I have switched meds and am working and successfully have lost and am still losing weight I put on; it is not necessarily a life sentence. But you need to take care of your life now and get yourself straightened out first. Don't mess yourself up about things that are a symtom of your illness (anxiety and body fixation) when what you need to do is get the underlying disorder fixed. Then get the surface patched, dear. When there is time and energy.