Need help!

Ladies I need help, around the middle of last week I started to get a slight itch in the vagina, I went a few days thinking it would go away but now it’s still itching from the end of my vagina to around my vulva and clitoris. The outside of my vagina is red and sore and itchy and I’ve been using vagisil and it helps for a little while but after I’ve peed and wiped a few times it’s still there. I used some of my husbands soap last week so I thought it was maybe from that. Could this be a yeast infection? I go to the dr Tuesday so I don’t know whether to bring it up or not but I’m in misery. Has anyone else had this?