Self-Injury Support Group
Whether you or someone you know or love struggles with self-injury, this is the community to discuss your experience, find support, meet others going through the same, and get advice on how to stop. Working together, we can help find alternative coping skills to reduce the urge to self-harm.

Resisting these urges differ amongst people, so I can't say for certain whether or not something may help you. Distractions seem to help most people. Something that you enjoy that isn't too straining. Drawing, reading, writing(maybe as like a way to vent), and for some people it's playing video games.
I'm not too familiar with these next ones, but they also help some people resist any urges. Such as taking an ice cube and squeezing it, or drawing on your skin.
I'm afraid that's all that comes to mind at the moment. I understand that both you and your son are sick at the moment, so that's probably your priority right now. Hopefully these urges will pass. Have a good day, and good luck.