Uh Oh! Dear 21,
Looks like you might have problem on your hands! First of all do you know for certain that it's herpes? If this is only a suspicion you have, then please visit your gynecologist as soon as possible. It is important to confirm that it is herpes you have as symptoms for other vaginal problems such as yeast infection can also be confused with that of herpes. Also, it is always a good idea to discuss with your partner about potentially transferring any infections and make sure that you are adopting protective measures before you have sex. The problem with a disease like herpes is that it can be transmitted from one person to another without the person transmitting it experiencing any of the symptoms. So even if he may think he's never had herpes, he could easily have passed on the infection to you. But first, go to the doctor and get yourself checked up properly to figure out whether it is herpes or not. If it is herpes after all, then you will have to get yourself treated and your doctor will help you with that.
As far as your talking to your boyfriend is concerned – I can understand how that may be awkward or unpleasant, but if he is the one that gave it to you, then you should probably talk about it with him. Maybe he's had it before so he knows he infected you. But it could also be possible that he doesn't know that he's carrying the infection without it turning into a disease. If that is the case, then, it is important that he knows it. In case you two decide to break up and he goes on to be with other women, he should make sure that he is aware of his condition and his ability to pass it on to future girlfriends.