Rheumatoid Arthritis and Progesterone?

QUESTION: My daughter give birth to her son 3 1/2 months ago. She is now experiencing some odd symptoms that the doctor suspects might be rheumatoid arthritis - stiff hands, feet, joints etc. I remember you saying that there may be a relationship between RA and low progesterone? She is back to having periods.

What can you tell me?

http://www.thecompounder.com/RA_and_progesterone.php