1: what causes bbs to be itchy ? on sides and nipples mostly

2: is a stuffy nose pms?

3: and is cramps at 8dpo pms related ?

Please leave answers.. I wasn’t really trying but after I ovulated I been getting almost daily tingles (as in puns and needle feeling) down below, I don’t have any std nor any issues. I do normally get one day tingle when I ovulate then the day before af starts I get another but it has been eight days and I get the tingles every day at least once.