Abuse??

I’m 14 and i’m literally stuck in my house. Lemme explain, I can’t even step outside the house unless i’m with another adult family member. If i step outside the house somebody(idk who this is and my grandpa won’t tell me) will call my grandpa (which i live with). I feel like i’m in jail because I don’t go anywhere unless I need something and have to go to the store. My counselor that i go to every Tuesday said that i need to socialize and she told my grandpa this multiple times but he won’t listen. Anyways, i have multiple mental health issues (depression,ptsd,anxiety) and this is driving me crazy. I’m currently having a mental breakdown and I honestly don’t know what to do at this point. I fear for my safety and i don’t know who to trust anymore as my mom kicked me out of the house(she abused me for most of my life)and my dad left me. Im not sure who this stalker is and i feel like my grandpa is paying them to watch me or something. I know this sounds kinda crazy but this is my reality that i have to deal with every single day ☹️😭 I feel like the only thing i have control over is my weight 🥺Anyways, is this abuse and what can i do about it?