First post - struggling with the anxiety

Can anyone relate to this? I’ve spent the last week having tests and port inserted and due to start chemo on Tuesday.  I’m really struggling waiting for chemo to start. It feels like the cancer is growing (even though I can’t bear to touch it to see) and I’m  finding the waiting excruciating. Any tips gratefully accepted. I’ve never felt like this. I’m guessing nothing can be done over next 24 hours even if I rang the surgeon / oncologist tomorrow, nothing would happen before Tuesday at this point. Just need to wait it out I’m thinking.