Question! Have any of you experienced hangover-like symptoms without consuming alcohol? This morning I woke up groggy with a dull headache, and slight nausea. I drank water and ate the usual amount yesterday, I feel like. I have a couple pregnancy tests handy, but I doubt that's the reason. I have been on the Mirena (iud) for 3 years and ended my last period about a week ago. What could be the problem?!?