Do you feel lousy when you quit smoking?

I’ve quit smoking and I am on my 5th day! However, I feel really ill … just feel like crap.  I feel like i wanna throw up!! Lost my appetite, can’t consentrate  and I’ve got no energy at all.  I just wondered if this could be withdrawal symptoms from not smoking? And i’m using nicotine patch , gum , and nasal spray! thanks !