Anxious about tomorrow

I have a new boyfriend and basically a week after we began dating his dad went in for an MRI and was rushed into emergency surgery and he has possible liver, prostate and bone cancer. He has a tumour on his spine and tomorrow my boyfriend is going with his dad and they’re going to find out the biopsy results and just how bad it is. He’s already being booked for radiation and stuff BEFORE the appt. The doctor also told his mom to book off work for the appt. I have an anxiety disorder. I don’t know why I’m so anxious, it’s him that’s going through this. I just really like him. It’s scary.