This patient support community is for discussions relating to undiagnosed symptoms, breathing difficulties, feeling cold, cough, diarrhea, dizziness, fainting, fever, indigestion, itching, nausea, numbness, pain (chronic), paralysis, rash, sweating, swelling, urination problems, and vomiting.
Without examination confirmation of a diagnosis is tough but it looks like you are having chronic fatigue syndrome. It manifests with widespread myalgia and arthralgia, cognitive difficulties, chronic mental and physical exhaustion,headaches and concentration difficulty and memory problems.A diagnostic evaluation is required to rule it out.
Other possibilities are anemia, hypothyroidism, disorders of the hypothalamus,
psychiatric disorders like depression and sleep-related breathing disorders.
The pain in the tail bone can be due to coccydynia. Inflammation of the bony area (tailbone or coccyx) located between the buttocks is referred to as coccydynia. Coccydynia is associated with pain and tenderness at the tip of the tailbone between the buttocks. The pain is often worsened by sitting.
I sincerely advise you to consult a physician and get these possibilities ruled out.
Hope it helps.Tkae care and pls do keep me posted on how you are doing.Kind regards.