Temazepam symptoms and conditions

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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I have been taking Levoxyl 50 mcg for 7 weeks now. I experience tingling down my left arm and hand one day, but it hasn't returned. I did notice I wasn't as tired around the 4th week. But then started having a hard time falling asleep and it became a pattern. I was up to 2 to 4am everynight. I have kids to get up for school at 6:45am. So this was not good! My Dr. prescribed Temazepam to help me go to sleep at night. It works, but leaves me feeling tired most of the next day. I would really like to find a natural solution.