I use this one, seems to help, but only if I sleep with my head in the middle. Sometimes I wake up on my side, on the edge of the pillow, and will have a head/neck ache, I think from unconsciously trying to hold my head from rolling into the divot.
There a variety of styles / shapes of cervical neck pillows. It might be worth trying another. I recently order two on Amazon that are foam and looks like a regular cotton filled pillow with an oval stitched into the middle to create the dip. I linked one similar to mine. That style make work better for you.
Core Products Tri-Core Cervical Support Pillow, Standard Firm - Full Size https://www.amazon.com/dp/B000ET9TXQ/ref=cm_sw_r_cp_api_glt_fabc_Q0XVWYWQ2FRB808P3BCY
If you have a soft airplane neck pillow start there. That’s my go to when it’s real bad. (I suffer from fibro, hEDS, and have recently had a neck fusion from c5-7 from very early onset severe degenerative spine issues; due to hypermobility)
I just recently got this travel pillow Cabeau brand airplane pillow that’s really great.
Airplane pillows are kinda depressing though. Before the fusion I had a regular shaped pillow from my chiropractor to support the cervical spine but you can find it on Amazon etc. I literally could not sleep without it; I took it everywhere. Core Products Tri-Core Cervical Support Pillow, Standard Firm - Full Size https://www.amazon.com/dp/B000ET9TXQ/ref=cm_sw_r_cp_api_glt_fabc_92CMHDGSYSCJ1WDHBPQS
Also; it’s not cheap; but a mattress can also deeply affect neck pain. The difference in my chronic pain in my neck and spine was dramatically changed when we bought a really nice Sealey posturpedic mattress as an upgrade from a good but craigslisted mattress from my 20’s. Game changer; but not cheap. But very much worth it.
I had a similar situation with my neck (from sitting in a crappy chair all day). My chiropractor recommended a pillow like this: Core Products Tri-Core Cervical Support Pillow for Neck Pain, Orthopedic Contour Pillow, Standard Firm, White, Full Size 24" x 16" https://smile.amazon.com/dp/B000ET9TXQ/ref=cm_sw_r_sm_apa_i_0Z1DFb6P0G64E
It's worked wonders. My curve was actually going the wrong way in my neck and now I'm back to normal. Read the directions, though. It'll tell you how to use it...
I use this pillow: https://www.amazon.com/gp/product/B000ET9TXQ/
Takes some time to get used to but helped me a lot. Only downside is it doesn't last very long, usually have to replace mine every 6 months or so.
Core Products Tri-Core Cervical Support Pillow, Standard Firm - Full Size https://www.amazon.com/dp/B000ET9TXQ/ref=cm_sw_r_cp_api_glt_i_HG78PJ70MZ8D67ZYKAN5
Elviros Cervical Memory Foam Pillow, Contour Pillows for Neck and Shoulder Pain, Ergonomic Orthopedic Sleeping Neck Contoured Support Pillow for Side Sleepers, Back and Stomach Sleepers (Blue) https://www.amazon.com/dp/B088WNMNX1/ref=cm_sw_r_cp_api_glt_i_6EJSHDPDYFV27C50Z5TH?_encoding=UTF8&psc=1
These are close to the ones I have or have used. I actually had two slightly different styles of the foam one.
The first is closer to a regular pillow, filled with regular stuffing not memory foam. And slightly less structured. I like both styles, both have been helpful when I have more issues with my neck which can very much feed into TMJ issues. I think it also helps keep you on your back which is very helpful for me when I am having more issues with tmj symptoms/ avoiding side sleeping which has put to much pressure on one side of my jaw and can cause it lock up.
...bump behind your head? What does that mean?
My best guess is you're looking for a more sleep-on-your back pillow, with an indentation for the head, like this: https://www.amazon.com/gp/product/B000ET9TXQ/
No problem, it's this one.
I like Tri-Core pillows, they take a few nights to get used to but the cradle for your neck is awesome.
I’ve got scoliosis and this pillow has been a miracle for my back issues.
Core Products Tri-Core Cervical Support Pillow, Standard Firm - Full Size https://www.amazon.com/dp/B000ET9TXQ/ref=cm_sw_r_cp_api_i_Gzl6DbDNHF0RM
I have found heat packs are great, and anti-inflammatory, but ask your doctor to prescribe you one that it's not harsh on your stomach. dicoflenac this comes in pill and ointment form. some people swear by the cream, honestly it did not work for me. I have severe pain, but I have found a nice heat pack to the side of my face will temporarily calm the pain, I tend to fall asleep with one on, the best heat packs are the microwaveable ones. Also there are TMJ pillows that help, it takes a little to get used to them. here is a link http://www.amazon.com/Tri-Core-Cervical-Pillow-Full-Standard/dp/B000ET9TXQ/ref=sr_1_1?ie=UTF8&qid=1455557025&sr=8-1&keywords=tmj+pillow
I have this one, it works great.
This pillow has helped me changed my habit of sleeping on my stomach. It is a little uncomfortable the first few nights, but after that you won’t be able to sleep without. Good for people who want to better their sleep hygiene.
Tri-Core Pillow Full Size - Firm Support https://www.amazon.com/dp/B000ET9TXQ/ref=cm_sw_r_cp_api_R7iJAbRMMMQ64