Whenever I feel sad/depressed cus of something, my tummy feel pain/discomfort when eating which made me skip meals few times

Just want to be alone in the room all day but also wish at the same time for someone to come in know that i am sad and gives me a hug but scared that they think that I'm just overreacting or I can't give an explanation when being ask why cus it's hard to form my feelings into words and bring it out if my mouth

I'm grateful that there's music/ songs cus they helped me calm down and easier for me to sleep but I had to sit on the floor for a while before going to my bed. Is it weird that I feel more comfortable on the floor than my bed sometimes?

Even though now I'm feeling not as sad as before but sometimes similar things happen or when I'm overthinking.. my chest and breathing feels abit heavy, my back and jaw or sometimes my whole body feel heavy/tired, my inside feels shaky .
I'm not sure if this is because of depression or anxiety cus I hav also been worried alot about my future cus Im 17 but hav no dream jobs yet.