Hello claireunderwood: Unfortunately I can't answer your question. I took Trazodone for sleep years ago. But I don't ever recall experiencing any of the side effects you describe, except for possibly having it take longer to wake up in the morning. But I have that anyway.
If you've only been taking it a few weeks, I would think your side effects should clear fairly quickly. My recollection is that Trazodone is supposed to be a pretty easy med to go on & off of. Have you consulted with the doctor who prescribed it? Since it's giving you trouble, this may be the best course of action to take.