Constant sweet taste in my mouth for 1 1/2 weeks?

I am obese but I am working out and steadily losing weight. I've cut out pasta (especially white). Diabetes doesn't run in my family and I just did a urine test 30 minutes ago and there was no glucose/ketones in my urine. I am also anemic and am working on getting enough B12/Iron in my diet. Still, I have this sweet taste in my mouth. It's like I ate a packet of sugar. What is it?