Nothing that you have described here concerns me that you acquired herpes at this encounter. The symptoms that you have just are not consistent with new herpes. I am also not concerned about the testicular bump that you describe. As a straight male, if you acquired herpes, the initial symptoms would be on the shaft of the penis rather than your anus. Also, the fact that you started developing symptoms the next day says this is very likely not related to herpes. I am assuming that you have had an antibody test previously indicating that you were not infected prior to this encounter with HSV-2?
Terri