Crisis Mode

Okay so I lost my job around 3 weeks ago and I’ve been using weed to help combat my depression as my mental health has seriously suffered from this. I’m also tying to find another job and today I got called for a job interview at my local hospital. I have worked in hospitals before and at the time I wasn’t using anything so I know they will do a urine drug test. I’m ridiculously scared I’m going to fail and I need this job to pay my bills. I’m honestly just spiraling into a deeper depression. I have no idea what to do. Please help! Any advice appreciated..!!

UPDATE: I had the interview today and I don’t know if I had the job yet.. one and a half to two weeks after I know if I got the job or not I will have a physical which includes a drug test..