Afraid of losing control

Hi everyone. I've been diagnosed with depression lately. It's my 5th day taking medicine. I saw therapist whom I said about my panic attacks after smoking weed and that there's my grandma's sister suffering with schizophrenia. She told me not to smoke weed ever again. I've started having my first panic attacks sober one month ago. After taking to her, I had the biggest panic attack in the night, really feeling like I'm losing my mind and that I might suffer more than just depression. I'm constantly anxious and whenever I think about it, all bad thoughts come to my mind. I think of terrible things that I try to push away. This way I stay anxious. But when I'm outside, when I force myself, it's not that bad. I just can't relax in my bed anymore. Anyone having similar thoughts?

Xoxo