Itchy down stairs ???

I ran out of soap the yesterday day so when I had a shower I used handwash soap. I had sex that day so you know I kind of had to clean that area well using the soap and I never really thought anything of it. Until today! my v is so itchy! I kind of had a little look 🙃🍓 but everything seems to be in order. (I was originally thinking yeast infection which is scary bc I've never had one before). Do you think I'm itchy from the soap??? Or could it be something else??? Help