Broken record that I sound like? Have you been checked for fever, immune issues, hormone issues (menopause, pre-menopause, thyroid, etc.).... Because that's what pops to mind for me. That, and, to be honest, I think some meds can mess up my body's "thermostat".

Healing hopes.

Some people just sleep hot. What kind of mattress do you have? Foams of all kind trap heat, even gel covered ones that are supposedly cooling. Even the thin layer of foam or padding on top of a coil mattress traps heat.

I use layers of wool and cotton (all natural material) on top of the mattress to stay cool.

Thank you for the replys. I have hypothyroidism but its managed with medicine and I haven't have any issues lately. I'm only 28 so I'm not menopausal. I did have a hormone panel that was normal. My RA has done testing but doesn't know what's wrong besides a few slightly elevated things and a positive ANA. I am hot beyond just sleeping . My boyfriend comments that I have heat coming off of me even in cold situations. I keep the thermostat on 63 when I have the chance.

I too am often hot. My husband always claims that heat is pouring of me. My house is also set to a cooler temp. I cannot tolerate being hot in places. I'm going to have to check for hypothyroidism because I have many of the symptoms. My winter wardrobe isn't too different from the rest of the year!

Two things come to mind based on my experience. First, you mentioned you're being treated for hypothyroidism. There is a possibility that you've become hyperthyroid. Heat sensitivity is a symptom.

The other thing that comes to mind is how my RA effects me. It took me awhile to figure out where my overheating came in. I used to only be dxd with fibro from 2001 thru 2010. Then they changed it to an autoimmune arthritis until the end of 2012 when they finally settled on RA. So when my flares are worse than normal, I overheat. I started wearing short shorts and tank tops between March and October. And between November and February, I wear tights and t-shirts. And I'd still sweat profusely and my arms, chest and face would be red. 2014-15 winter I wore a light jacket maybe a handful of times. When my inflammation is lower, I'm a bit closer to normal.

"Always Hot" - Yes, I have felt that too.
Feeling as if I was "over heating" began with pre-menopausal heat flares in my 30s. I figured it was related to changes in my hormone levels. The heat flashes came after my hysterectomy & I began menopause. Even though I had hormone replacement patch I wore, I would sometimes wake up covered in sweat, felt like I woke up in a kiddie pool.
The feeling of "over heating" came on at times when I was in my 50s. After blood tests my doctor diagnosed me with my thyroid has stopped working. So a thyroid Rx was added to my pill schedule.
Feeling of "over heating" can happen for me, I sleep on large beach towel, soft towel over my pillow to soak up the sweat when I sweat at night. It is the access to air-conditioning, being able to keep the A/C as cool as my body needs it that has helped. Running a fan helps "dry" the air when it gets too humid.
Feeling "too hot" can happen to me during the cold winter months.
Hope this helps how to keep "cool" during those too hot events.

QuestIon: For those of you who are hot, but without other medical conditions (other than fibro), do you have a HIGH METABOLISM?

I have high metabolism (calories burn off quickly), so I wonder if they are burnt off as body heat.

I'm always cold. I live in Louisiana and we don't have harsh winters. The only time that I am hot is when it is in the 100's here in the summer time. I've got spine issues, nerve damage, RA and fibro, but I'm way older that you are, I'm 62. But, the always being cold has been my entire life. We even had to get an electric blanket with dual controls many years ago because he was always hot and I was always freezing.

No, it isn't "high metabolic rate" that is causing me to feel hot, to have hot flashes, to feel like I am over heating in my body. It is menopause, my body being too sensitive to the heat, thyroid problem, etc.

Two of my Rx meds can cause me to "over heat" if I take more than recommended dosage - Zoloft & Amyltriptiline. I am careful not to take more than one pill of each at a time.