Welcome to HCM,
Herpes viruses are a group of viruses which have a property of staying dormant in the body and getting reactivated when the persons immunity is low. These viruses are of 8 types. 1 and 2 are herpes simplex
and genital herpes
is type 5 herpes virus. Herpes 2 is genital herpes which is usually a sexually transmitted infection and affects the genitals.
There is no chance of cytomegalovirus giving positive for herpes 2 even though it is a past infection. You could have acquired genital herpes after the CMV infection