I Just Recently Had My Thryoid Out Because Of Cancer.

I just recently had my thryoid out because of cancer. For years I have been having the following symptoms but have gotten worse lately. My calcium levels, parathyroid levels, and blood pressure are all fine but I am still suffering from dizziness, headaches, memory loss, seeing spots, tingling in hands feet legs face mouth, numbness in face, very fatique, cannot walk for long of I feel like I will collapse, muscle cramps in hand feet legs,, trouble urinating...needing to urinate frequently, cannot concentrate, trouble swallowing. The er did a ct scan to see if it was stroke but showed nothing concerning that. would that ct scan be able to show a brain tumor? what could be causing these symptoms? I also have a mole looking thing that has grown on my face and is slowly getting bigger but it is clear not black or brown. I have an appointment to see my primary care physician next week but I would love some insight as to what this could possibly be. Thank you, Amanda