It's different for everyone, but it's usually a constant feeling for a few hours up to 2 days. Some people feel tingling, some feel itching, others feel something like a deep ache in a muscle, like the thighs. It really varies from person to person.
Random tingles happen all the time, and aren't likely to be prodrome.
I meant if they weren't blisters or cuts or sores, what were they? But you've answered me.
2cnd and 8th episode - how long did this last? Was this just a couple of days? Was the spot on your butt like the spot on the vagina?
3rd episode - probably not, since it lasted the entire pregnancy
4th, 5th, 6th, 7th - I don't know what these were, maybe just hormonal changes/pregnancy things, or pimples/hair follicles