I have been on Synthroid and Levothyroxine for 12 years (I am 34 ...

I have been on Synthroid and Levothyroxine for 12 years (I am 34 years old). All of a sudden, I had very achy fingers which got much worse over the course of two weeks until I could barely move them. Then my ankles hurt. I mentioned it to a coworker who told me the same thing happened to her but when she switched to armour it went away. So I drove an hour across town to the only doctor who prescribes it, and now just a few days have passed, and my pain has nearly ceased. I thought I had rheumatoid arthritis. I'm so glad I my coworker shared her experience with me. That is why I am posting now.