I've had herpes since I was 14 I'm 21 now and it is just now

I've had herpes since I was 14 I'm 21 now and it is just now hitting me I'm in this really loving relationship the last thing I want to do just give herpes to my girlfriend but I'm just so scared we had oral sex the other day and now she says her throat hurts so I'm scared that I might have given it to her

Does she know that you have it? Herpes can br transmitted even if you don't have any symptoms, using protection doesn't guarantee you won't pass it on, but it is safer. So to reduce the risk of passing it to her you should use dental dams and put condoms on any sex toys you both use. There's a herpes group on this site which is helpful for tips on managing the virus.
How are things going for you now?