Welcome to the forum.
I'm sorry to hear about the virus you have. Sometimes when such things occur, it is a way of our body telling us that we need to stop and listen, and see what we're doing wrong or what we need to pay attention to. You may want to check out the Recommended (Psychology) Books section on this forum, which might help you understand and discover some underlying unconscious issues going on in your life.
I would further recommend you to increase your knowledge on this virus by visiting _http://www.herpes.com and also to talk about it with your doctor.
I'm dealing with the more or less same virus, but mine is located in my eye. The medicine I get from the doctor helps, but what has helped me most have been dietary changes and regularly doing a meditation and breathing program named Éiriú Eolas, which you can find here: http://eiriu-eolas.org/
One of the reasons why this breathing program is important is because it relieves stress. Stress can play a major factor in weakening your immune system, as Gawan also pointed out.
Regarding dietary changes, you can read the books "Life Without Bread" and "Primal Body, Primal Mind" for starters, there is also a thread on this forum where we discuss our experiences and more regarding these changes: http://cassiopaea.org/forum/index.php/topic,22916.0.html
I can say from experience that certain proteins found in wheat products (such as gluten) and milk products (such as casein) can make the virus grow stronger. Nuts and seeds are a big no-no too, as they contain a large amount of arginine which is an amino acid that enhances the growth of this virus (and other types of viruses). So eliminating these would be a good start, but please do read the recommended books and do some researching, talking to your doctor etc., before you decide to do anything.