Two days isn't long enough to see results from your anti-depressant. You have gone through the loss of your husband around 6 months ago and your sister was having health problems then too. You also found out you have Crohns not too long ago as well. You had been suffering for a long time with them treating you with Canassa for cuffitis and I don't remember about pouchitis. You have been hit with health insurance problems too. Problems have been raining down on you for a very long time.
You are human. It is normal for all of these things to cause stress and the compounding affect of all of them in such a short period of time has been a heavy weight not only on your health but your heart too. I can only imagine what grief you are going through.
When we loose our colons we also loose the body part that helps produce serotonin. Loosing that important component in our bodies leads to depression. Many antidepressants even have serotonin in their descriptions. SSRIs for example, Serotonin is what the first S stands for. Please don't think less of yourself because you are taking it. I found out that a change in my antidepressant helps keep my migraine headaches away. Who knew! It, Amytriptyline, also helps j-pouchers in some studies I've read. It is an old school antidepressant so I am not suggesting everyone needs to be on it. The newer ones might have fewer side effects. I'm just using it as an example. I was prescribed it by my neurologist and my psychiatrist increased the dose to help my depression. I'm still taking the antidepressant I was on before the surgeries as well. I quit beating myself up about these. If I needed to be in insulin, for example, I wound not wean myself off of it so I have quit feeling weak because I need them.
I also use xanex as needed for anxiety. I think your life's circumstances might be helped by taking it sometimes as well. I don't know - I'm not a doctor, and they don't let accountants prescribe medications, 
I was hoping the remicaide would help you right away. The only suggestion I have to help you right now is to take Imodium or something like it. I use the prescription form when I need it. Also, I found that my GI's and surgeons don't prescribe medications for long term usage. I need to see other medical professionals for long term pain relief and for depression. I don't know what help your GI will be able to provide along these lines. My PCP managed my depression medications until I could get a psychiatrist to prescribe them for me. I also see a therapist. You might not need one or think you need one but it might help. You are under a gigantic amount of stress and sadness.
You are in my thoughts and prayers,
Paulette