Overwhelmed .

Lately i have been feeling so overwhelmed by everything. I don’t really have friends to talk to and i don’t feel like my bf understands me when i talk. I don’t understand why i feel so overwhelmed but lately every single day i start having a panic attack atleast twice a day i start having trouble breathing and i wanna break down and cry but i can’t because i have to work. I have realized more lately that i am terrified of being by myself and i hate going or do anything by myself. So if i am alone or the thought of being alone i start panicking and i feel my breathing getting harder. I want to go to a doctor for my anxiety and depression but i am terrified of them and i hate talking about my mental health with anyone. Any advice on how to calm my nerves on going to a doctor ?