Antibodies are in your blood, not your scrotum, so you wouldn't feel this process in your scrotum. You wouldn't feel it at all.
You had a protected, one-time encounter. The chances of you getting herpes from this are quite, quite low. I wouldn't even worry about it, especially since you've had no symptoms. (Prodrome symptoms last a day or two, at most, and vary from person to person. Yes, some are mild and others are more noticeable, but if this has gone on longer than a couple of days, it's not prodrome.)
I suspect what is happening is a heightened awareness of your body since you are feeling VERY anxious, and are looking for things that may be herpes. I know that sounds dismissive, and I don't mean it to, but it's actually quite common.
Please know that none of this is worth killing yourself over. Even if you have herpes (and I really don't think you do), that isn't worth suicide. Millions and millions of people with herpes live totally fulfilling lives. Don't let your anxiety take over here and make it into something it isn't.
Since I suspect that anxiety isn't new for you, and since you used the phrases, "I would probably kill myself" and "I feel like I'm losing my mind", please get some help. I say this with compassion, not criticism. Anxiety is a very real thing, but there is help available. Here are some resources for you - https://
www.medhelp.org/general-health/articles/MedHelp-Crisis-Resources/1037