If you have no antibodies at 12 weeks, chances are that this isn't herpes. (It can take up to 16 weeks to show positive on a test, but most people will by 6 weeks.)
If you are saying that your symptoms lasted a month, that's also not herpes. Even an initial outbreak, which can last longer, wouldn't last longer than a couple of weeks. You might get another one really quickly, but the first one would heal.
It also wouldn't spread like it sounds yours did. That sounds fungal to me.
I'm not a doctor, nor am I your doctor who saw you, but herpes doesn't sound right to me. Test again at 16 weeks, and if you're negative, it's for sure not herpes.
You don't describe what the bumps looked like, but also google molluscum to see if that fits. That can spread quickly.
I hope you are feeling better now.