What Causes Leg Cramps Inspite Of Being On Levothyroxine?

im on levothyroxine 50mg for my thyroids, but my labs are saying that i have high thyroids i was told that my thyroids were not acting when put on the med two years ago can this also lower my thyroids. i have been having a problem breathing,sleeping,leg cramps,chest pains,and tiredness