Ichy Vagina?

Okay so I got woken up around 3am this morning by my vagina! She was so ichy! It was unbelievably ichy. I am 39 weeks pregnant and I have not done or used anything differently, I did take a bath before bed as I always do. I have no other symptoms with the itch. It got so swollen due to how ichy it was. I tired my hardest not to ich it but I did. I have not had this issue at all ever, it lasted about 2 hrs! Went away already. I had no discharge or smell or anything else just a ich. Was so weird. Anyone else experience this late In pregnancy? I called my nurse line and they said it could be from hormones, or even a allergic reaction to soap or something.