This post is 6 years old. If you post this as a new post you might get some good feedback, though I think my old answer is still relevant.
Yes! I have had the same exact thing happen to me. Now that I'm on 40mg of Paxil I have leg aches every time I lay down. I hate it!
All ssris and antidepressants in general can cause muscle cramping, which isn't exactly what you're describing but close. I got cramps on Paxil. Try taking a 2:1 magnesium citrate to calcium citrate supplement, as magnesium helps reduce muscle cramping, and see if it helps. Solaray makes a good one, so does Bluebonnet.