What should I do?

So today my six year old has to get dental work done. Not a lot but he is getting his two front teeth removed because they are apparently dead from a fall when he was younger and now they are interfering with the adult teeth trying to come through.

Here is my problem...I made this appointment back in December knowing it takes a month or so to get another one. Today I had to pick him up from school because he wasn't feeling well. Once I got him, he just said he didn't feel well. No fever, slight cough. No big deal. Should I keep the appointment? Or should I call and reschedule?