Cuartet I'm having the exact same problem as you, its driving me crazy. Like you, I only get itchy at night time and all my test results have came back negative. I'm so frustrated because its interfering with my daily activities, work and sleep! I have never been on Depo Provera but did change the brand of my birth control pill 2 months ago. I hope you update with your situation and I for sure will. I hope you get better!