Am I or Not

I'm so confused. hubby told me that I told him I was working tomorrow(Monday), but I don't remember. I did copy the schedule, but they messed up Wenesday and had me working in the morning, but M has one of her evaluations so I can't work. Anyways, I gave that copy to a manager to go over to see what they could do for me. And now I can't tell if I'm working or not. I called my friend who will be at work a few hrs before I will need to be there(if I work) and she's going to call me and let me know. So at lest if I do I shouldn't be too late, but I'm 99% sure I'm not working. They usually have me on Sundays, so I'm freaking a little bit.