Help Me Sleep.... P-L-E-A-S-E

Okay, ladies, I'm in desperate need of some help! About three years ago I started having night sweats. Nothing too bad really. It only happened once in a while really. I wasn't too concerned and just lived with it.

Now, however, things are different. They have gradually increased in frequency. Now it's to the point where it happens more times a week than it doesn't. I wake up in the middle of the night absolutely drenched. I have to change my PJ's, go get a towel to sleep on and then try to get back to sleep. Meanwhile, I'm freezing to death. Crazy, huh?

I've had my thyroid checked and it was fine. My OB/GYN also confirmed that I'm not going through peri (pre) menopause. So, what's the deal?! What in the world can I do to stop this?

I sleep in a very light shirt and under a sheet and blanket. That's it. Any advice would be greatly appreciated. Thanks in advance. :)

P.S. - Just for reference, I'm only 37!