Hi Kara,
I'm sorry to hear the Trazadone didn't work as well as your Ambien, how much did you take? and since you are out of your Ambien, can't your pharmacy fill your script? I tried the Ambien, and I woke up several times on it, and my husband said after I took it, I said strange things, but I didn't remember any of it! My MIL says it works well for her too, so it is all about finding what makes you sleep.
If the pharmacy can't help, maybe contact your rheumy since your script is not for a full month?