Hi there, Thank you for writing to us. There are a couple of things that you need to be aware of when you have symptoms like cramps in your muscles and aches and pains in your body. The first thing is that your calcium level can be low and it is good to know that your calcium level is normal. But in spite of the fact that your calcium level in the blood is normal I would still suggest that you take over the counter calcium and vitamin D supplements as this may still help you with your aches and pains and muscle spasms. The second thing that you need to know and that is frequently ignored is that not only calcium levels should be monitored after thyroid surgery but magnesium levels are also important and they also need to be monitored. Therefore I would recommend that you should have a magnesium level done as well. If you cannot have that done right away then I would suggest that you should start on over the counter magnesium supplements now as this may help with the pains and cramps that you are having. Another important thing that you should know is that you should monitor your thyroid hormone levels every 6 to 8 weeks until they stabilize because deranged levels of thyroid hormones can also cause symptoms like thing. In addition to calcium and magnesium, potassium levels that are lower than normal can also cause such symptoms to appear. You can try taking a rich potassium diet as well. Kindest Regards