For 2-3 Weeks At Least, I Have Had Itching Of

For 2-3 weeks at least, I have had itching of the vulva and clitoris, with no discharge. The only things I know of that could cause my skin to itch that were different when this began were: (1) using another all-natural, clear of fragrances, etc. laundry soap; and using the same brand of TP, but in an unbleached form. I changed back to our previous products in both cases about 2 weeks ago, but nothing has improved. At the suggestion of my doctor, I bought an over-the-counter "feminine" anti-itch cream, and I bought one even though there were none without fragrance. The itching is worse at night, but is getting worse during the day as well. What's up?