Depressed?

I'm pretty sure I'm depressed. About a lot of things. It's just harder to deal with everything now. No drink after a hard day. Nothing to calm me down. I deal with so much , I have a sick mother living with me, I'm the only child so all the responsibility falls on me. I swear she is the most ungrateful mother ever. I always wanted a nice , sweet mom like I see others have. No , mine is crazy , she loves me, but she has been diagnosed with borderline personality disorder, manic depression, and no polor, although she says she doesn't have any of that and takes no meds. My son , the love of my life have sensory issues, the school did an evaluation and that was their conclusion but still can't find the help we need from professional. He also has crazy bad ocd , that is the worst part . I just get so tired of just being stressed out all day every day. I feel like most days I'm pushed to the max. I don't live to be happy and enjoy my life, I barely ever get that. I'm just here, doing the same thing every day for years. I can't wait to see my new baby boy. I've tried to tell my doctor that I'm really stressed. Sometimes feel like everything is crumbling and falling on my head. All age recommended was walking, I already do, yoga, and she gave me phenagen to knock me out at night when I need it. Sometimes I don't know what to do. Is anyone else super stressed and maybe depressed? Can I just cry myself into like a month coma? I need a break :(