Need a minute to vent.

I take care of my grandmother who has dementia and is on hospice. My attitude during the day sometimes gets rude but I deal with a lot and sometimes feel like it comes out when I get asked stupid questions or I get over stressed. Well I'm over getting lectured by my mother that I'm being a sh*t and it's always something with her. She went by my house "my god it's such a disaster do you do anything there?" Or " your grandfather is saying you don't do anything at his house all day. Do you just sit on your ass or sleep why can't you be more productive?" I'm already overwhelmed battling the feeling of I'm fat and ugly when I know it's not true I'm growing a child. But I had issues before with this and my depression and my doctor made me stop my medications so I feel like all of it is side effects from that but I'm at a breaking point like wanting to literally break all my stuff in my house and light it on fire point from hearing I keep messing up. I just don't know what to do anymore and when I get these lectures I shut down....

Sorry for long post I just needed to let it out somewhere.