I had surgery recently and took 2 5-325 hydrocondones. They gave me a terrible headache and anxiety. I get weird side effects from a lot of meds. I take 5 mgs. of Valium 3 xs a day and 100 mgs. of Trazadone at bedtime. My question is how long should I wait to take the valium after taking this dose of hydrocodone. It's made me feel awful and I'd like to take a Valium and Trazadone at bedtime. I took the hydrocodone at 11:30 am.