I would caution you to write off medication for depression as a dr trying to get you hooked on meds to keep paying him. My depression is a chemical imbalance and the medication I take levels the playing field for me. Without the medication, my recovery would suffer. It's something to consider.
Being home alone sounds like a serious trigger for you, so plan ahead. Get out of the house, even if for a short walk. As others have said, you thinking will have to shift and change will be part of your recovery. I hope you continue to read and post.