Gonna try to make this short..

I'm 21, been dealing with pretty severe health anxiety since 2018. (It just suddenly happened.. Not sure how or why).

It's been coming and going this year, I thought if I get a job I would feel better.

Been working for 3 months doing overnight stocking. I'm starting to feel worse again, I've been getting constant panic attacks for the past few days.. I had to call in sick 2 days ago, I'm still feeling horrible.. 
Sleeping during the day has also been making me really sad.

I was really lucky to get a job so I'm scared to quit. I already talked to the manager about giving me less hours but it didn't help me much.. 

I'm scared to ask for more accommodation. I keep thinking I'm just being whiny and high maintenance so I tell myself to suck it up.
I keep thinking about just quitting and going to a youth employment program. 

Nothing really wrong with the workplace, just no one for me to talk to. I'm just by myself doing my thing all night.

I don't know what to do.. :(  

Anyone deal with something like this?? Id love to hear others experiences and talk to someone..