Canadian married to US citizen wants to return to Canada

lll

So basically you've been in the US illegally for 6 years?

Yes, you will face a ban of up to 10 years, possibly life, if you leave the US now.

I suggest you seek a consultation with a competent immigration lawyer in the US, and decide whether you want to stay in the US and apply for adjustment of status (which could likely be denied at this point) or return to Canada, and sponsor your husband to move there.