Hi
Thanks for writing to the forum!
The two pains may not be related unless you have caught flu. Your symptoms can be due to sinusitis. Your reports will confirm that. The other possibilities are cervical nerve not compression, internal ear problems, dental caries, temporal arteritis, migraine, tension headaches and high blood pressure.
Stomach flu, parasites in the gut, ulcerative colitis, diverticulitis, IBS, celiac disease etc should all be investigated for.
It is difficult to comment beyond this at this stage. Maybe you can seek another opinion. A comprehensive investigation is required keeping all the points in mind. Please let me know if there is any thing else and do keep me posted. Take care!
Sorry about your pain. I can only coment on the head,neck and so forth. Have you gone to the dentist to rule out tmj? As far as the abdominal stuff it might not be related. Please if all the test came back ok try the dental route.