Seroquel and ambien

I have been on Temazepam 45 mg. @ bedtime for over a year, about 3 months ago it stopped working. This week my doctor stopped the Temazepam and put me on Seroquel 50 mg. @ bedtime. The first night I woke every 2 hours with BAD nightmares! So I tried two more nights just in case it needs a "working in" period: Well I still wake every two hours like clockwork and the dreams are so so real! I wake myself up talking! I don't know how much longer it will take (if ever) to get into my system. I just want to know if anyone else is having this problem and if I should call my doctor? All help would be appreciated.
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oh, my gosh! i have been on seroquel for six months. it has been horrible! sweating,dehydration, weight gain. the WORST has been costchondritis(severe chest pain), extreme hoarseness, and now muscle aches and tightness in my legs, arms and chest. my psych says he has heard of these side effects but has never seen them. am i poisoning myself?

Up until the end of August, 2007, I was on 20mg of Abilify a day. I weened myself off of the Abilify before my wedding on October 20. Then, I went on my honeymoon to Germany. When I returned from Germany, I could not sleep. This lasted for 3 weeks, until I felt like I had to go to the hospital to get knocked out or I would die. My family doctor told me to see a psychiatrist because I went off my meds without medical supervision. The new psychiatrist prescribed Seroquel for my insomnia. She gradually increased it until I was getting about 6 hours a night. I'm now on 500 mg, which I take about two hours before bedtime. I've noticed an increase in my breast size in less than one month of use. I've also gained about 5-7 pounds. Some days, I feel hazy during the day and some nights I have difficulty taking a deep breath. I am seeing a new psychiatrist tomorrow to see about getting off of Seroquel and on something else. Its great for insomnia, but the side effects are immediate and troubling.