If this is a very long term partner, and things are going to continue that way, then I really wouldn't worry too much. You both more than likely have whatever the other has. Your partner has in all likelihood not been tested for HSV and it is not likely to play a role in his illness. I'm sure he'd feel the same way.
Sorry I meant to say not sleeping with anybody he gets checked regularly because he can't have any viruses since he's recovered now for two years since having cancer...... I. Just hope it isn't herpes.
Do you think this is something to worry about ? The cut is just sore and I'm scared to walk or do any sudden movements because I don't want it to crack more. We do have unprotected sex but he is sterile.
There doesn't seem any particular reason to suspect herpes. If your partner has had other partners and you are having unprotected sex then why not ask that he test for both of your protection and comfort. IgG type specific for HSV 1 and 2 must be requested specifically.