I have taken Nature-Throid successfully for many years. I just realized my last refill was changed to WP Thyroid, both are made by RLC labs. But after 2 months of taking WP, I have horrible side effects. I have gained 10 pounds, my joints ache, I am bloated, my joints are all swollen, and so is my face, I am anxious again, many side effects. Help! Has anyone else experienced this when your thyroid medication is changed without your knowledge of it? Nature-Throid is on backorder so I can't get it for now. What can I use that won't give me these horrible side effects?