I am sorry that you feel this way! Depression is hard to deal with. I am bipolar, and my main symptom is depression. Don`t beat yourself up over not having the energy to do anything. It is perfectly normal. Depression also has physical symptoms, like lethargy, etc. You have an illness, and this illness does have debilitating symtoms at times. For me, the lethargy lasts for weeks, and I can barely get out of bed, and going out of the house is really hard. I have accepted this as part of my illness, and that has somehow helped me. But everyone is different.
I also have a terminated pregnancy. It is a regret in my life, not so much the abortion itself, but the knowledge that I today could have had two children istead of one. But the situation I was in, made it seem as the only alternative. So I support you in making that choice! What a hard decision to make. I think that you have been through a lot in your life, and you are still young. I am not surprised at all that it has brought on a depression. You have a lot to work through right now. Just remember that this too shall pass.
I would strongly suggest to see a psycologist. You need help to get through the things you are struggling with. And you don`t have to go into the stuff about your pregnancy at all in the beginning. Just let the trust build, and take some sessions to just get the feel of the therapist. It is also normal to get to know the psycologist first, just to see if he/she feels right for you. I started out with a psycologist thet I found out was not right for me. So I told him that it wasn`t working for me. You don`t even have to give a reason. After that I went to a couple of sessions with another one, and I felt a lot more comfortable with her. It was a woman, and I also felt more comfortable with that. The best of luck to you, and I hope you are feeling better soon