I have a lactose intolerance and have started taking an OTC lactose enzyme product to relieve symptoms when I know I'm going to be eating dairy products. Around the same time I started taking the enzyme I noticed a brownish vaginal discharge with some itching. I called my gynecologist who examined me. As I am in menopause, she also did an abdomenal ultrsound which she said was normal. Could taking the enzyme cause the discharge?