Volunteering Tomorrow?

I've been taking an antibiotic since last Tuesday. I think I'm well enough to go back to the hospital to volunteer. I'm still coughing but it's pretty clear. I thought I'd wait until next week just to be on the safe side. But today I found out that my Tuesday volunteering partner broke her hip. If I don't go, there's nobody there. Some weeks the days I'm there with my volunteer buddies are the only two days we have anybody there.