I am sorry you are feeling poorly.
I can definitely explain the symptoms in your hand for you.
One of the most common causes of tingling in the hand is carpal tunnel syndrome. This develops when the nerve that supplies the thumb, pointer and middle finger becomes irritated or compressed as it passes through a tunnel/band of tissue in the wrist. It causes numbness and tingling of the thumb, pointer and middle finger, just as you are describing.
People at risk for the development of this syndrome include pregnant women (wrist swells during pregnancy) and people who work on computers/typewriters or do a lot of repetitive work with their hands.
The nerve that supplies the hands/forearm can also be irritated anywhere along its course. It does not have to be the wrist, it can occur at the elbow or at the level of the neck. It is not a blood supply issue.
For this reason, a nerve conduction test/EMG test is performed in order to determine exactly where the problem is occuring. Your doctor may be able to tell by physical exam where the likely area is, but the EMG is the test of choice.
Until you can see your doctor for an exam and testing, you can try wearing wrist splint at night that keep your wrist in neutral position.
Also try taking an anti-inflammatory such as ibuprofen or aleve (as long as you do not have any contraindications).
Treatment for the syndrome depends on where the nerve is being irritated. If it is the wrist, the splints, physical therapy
and steroid injections can all be tried.
As for the body aches all over, I would suggest that you have your doctor do some blood work to check for autoimmune
diseases such as rheumatoid arthritis. (rheumatoid factor, ANA, sed rate, CRP, and thyroid test).
I hope this information is helpful for you. Let me know if you have any follow up questions and I will be happy to answer for you,
If you are satisfied with my help, please remember to click accept. Thank you!!