Can I go for Laser hair removal treatement if I'm on antibiotics?

I started ampicillin on Tuesday when my strep throat culture came back positive and I'm supposed to take the medications for 10 days. I have an appointment for laser hair removal on friday but the technician refused to see me because she is afraid it may cause photosensitivity. I've done some research and found that ampicillin doesnt cause photosensitivity, is this correct? how can I convince her to see me (she has competitive prices thats why I want to keep the appointment).