Why am I feeling alone?

I just broke up with my girlfriend who I also have a son with, and now she won't let me see him or even know how he's doing. She deleted me off of your facebook, and she blocked me so I'm not even capable or contacting her at all. I was also just recently hit by a car and broke my right femur. A couple of ribs, and my spine was fractured as well. The guy who hit me has had the charges dropped. I think all of that relates to this, but i can't figure out why. I feel good for awhile, but then i get to thinking again. It makes me feel unwanted, unloved, and like I don't even matter. I've dealt with suicidal thoughts before in my life when my foster parents died. Now it's back again and I don't know what to do. I've tried to contact a therapist, but there are none in my area. I'm confused.