I know a couple that is dealing with a similiar situation, having HSV1 the woman wasnt as scared to get HSV2, but the out breaks tend to be more severe. Her first outbreak she couldnt whipe after using the restroom, she had it around her anus as well as around her vagina. And it lasted over 3 weeks. HSV1 is more common, and the right perscription should help you with your symptoms, but HSV2 can be very painful and unmanagable at times. I think that you should really be carefull in this situation, and use protection atleast.
There is no medication that can actually help prevent you from getting herpes, there simply made to help the person that is infected. Acyclovir is sometimes used as suppressant therapy. In time you will probably will get HSV 2, but if you are already on the medication, it could make it so you only have mild breakouts, if you have them at all.