I stopped smoking and now I have no appetite?

I’ve been smoking on and off for a few years. Recently I have been smoking from the thc cartridge vape pen from a dispensary for a year. I stopped two days ago after I had a bad anxiety attack from it. I’ve been looking to quit so the vape pen was pretty much empty but when I pull from it I was still exhaling smoke. Has this happened to anyone? I know if the cartridge was full I wouldn’t have had an anxiety attack.

Also my appetite is completely gone. I feel hungry but don’t want to really eat. Is this normal?