I have a hiatal hernia which causes chest pains for me sometimes. I've found that the pain is worse when I sit down or slouch (since that puts pressure on my stomach) and better when my body is straight (standing or laying down). When it gets bad at work, I just try to sit up straighter, maybe even recline a bit if possible to put less pressure in my stomach (like slide my bottom forward in the chair then lean back), and get up and walk around every so often. It doesn't eliminate the pain but it helps a little -- have you found any other positions besides laying down that alleviates the pain?
Also, adding Nexium and changing my diet made the biggest difference. I'm not 100% sure exactly what foods trigger my GERD yet, but by eliminating some of the most common GERD trigger foodss my chest pain has improved a lot. Also, I believe stress/anxiety plays a role -- my GERD symptoms and chest pain always get worse when I have to work crazy hours or I'm otherwise stressed out!
For heating pads, you might look into Thermacare products or other similar brands -- they are stick-on heating pads you can wear for a few hours at a time. You can find them in most drugstores, Walmart, etc. They're usually near bandages and other first aid supplies.
However, I do agree that you should talk to your doctor to rule out other conditions before assuming it's GERD, just to be safe! Cardiovascular problems can sometimes manifest as pain in the right side, and my mom said her gallbladder gave her pains on the right side of her chest before it was removed.
Diagnoses: GERD, small hiatal hernia, anxiety, allergiesMedications: Nexium (GERD), Lexapro (anxiety), Singulair (allergies), Tazorac (acne)Note: I suspect my GERD was caused by taking antibiotics for acne. Please be careful about taking antibiotics when not necessary!