I am really unhappy to hear what is happening to you. I don't have much of an idea what would cause what your talking about.
I hope someone hear has an idea what you could do.
Can you see either an acupuncturist or a Kinesiologist. Both are able to read what is going on in the body. They read what the whites of your eyes look like and how your muscles respond to questions. Kinesiology sounds crazy, but it really worked for me. Acupuncture can be tax deductable if you have enough other deductions. Kinesiologists are often chiropractors and so it can be deductable as well. I hope you find some suggestions here, but I also hope you find a doctor to help you too. It sounds like you really need to find out whats going on.
If you are tempted to take calcium, be sure to take some magnesium, which is necessary to absorb calcium. Never take magnesium without calcium, (or drink soda pop) it slowly leaches the calcium out of your bones. This may contribute to diseases like osteoporosis. I pray God helps you find peace and comfort as well as guides you to help. Grace