J., I'm responding to the physical part of your delemma. I have been depressed all of my life but I have never had to deal with all that you are dealing with. I have taken several different anti-depressants but I suspect that you can't take any because you are depressed. So I can only imagine how you are feeling. What I imagine is that you are very depressed. I would be.
I would like to tell you about my daughter's experience. Her boyfriend also left her when she was pregnant but came back in a couple of months. But he left again when their daughter was 10 months old. We live in Oregon. She and her boyfriend received public assistance because neither one was working. There were some requirements for him but not for her since she was pregnant. They also qualified for "affordable housing" which means they moved into a new 2 br apartment with rent at $310 or so.
When he left she enrolled in a course to become a medical assistant and she continued to receive assistance. Since her boyfriend's name was on the birth certificate the state filed for child support. She only had to sign papers. Having the state file for child support is a great help. Otherwise she would have had to file papers and go to court herself.
My granddaughter is now 6 yo and he has not paid any child support. My daughter continued to receive assistance for awhile after she went to work as a MA. There are certain requirements but I won't outline them here since you live in WN and they may be different. I definitely think that you should contact the state and see if they can help you. I'm almost 100% sure that they can.
My daughter was also depressed and she received mental health counseling for free at a county clinic. I also found a clinic that was operated by a college that charged on a sliding scale.
Her sister, who has 4 children and a husband also received public assistance in the state of Wasington. Her husband worked but they qualified for food stamps abd health care.
Another friend of my daughter's, a man is now paying child support, but he stalled about taking the paternity test for several months. The mother received state aid even tho paternity hadn't been established.
My daughter now has a good job and is able to take care of her children as a single mother. She did marry and had another child but is now divorced. She struggles but she is succeeding.
My message is that everything seems impossible now but there is help out there. The fact that you cannot prove paternity is not an issue. I think my daughter was fortunate in that she had help from me and another agency that helped young people get on their feet. She was only 19 when she got pregnant and had no job skills. I would wish for you someone who could make calls to find the resources for you. If you don't have someone just start with the Department of Human Resources and don't give up if at first you talk with someone who is not helpful. The system can be difficult. I think that the way my daughter started was to call for an appointment. She didn't try to find out if she qualified or not on the phone. Face to face seems to work best.
I empathize with your situation. I also know that you can make it. My daughter has had a lot of difficulties her entire life but she is doing well now. I am pulling for you.
M.