Could I be a host?

I have been nauseous off and on for a year now with IBS symptoms, serious fatigue and serious joint pain...lately I also get a vibrating sensation like I have a Cell Phone in my pocket when I don't. I had a positive ana test with no rheumatic disease found. I off and on have a abnormally high leukocytes in my urine. I've had low calcium and low vit d but beyond that Drs have no idea why I feel this way. Also note worthy I have a cat who has no hair on her belly because she pulled it all out... Could I have a parasite? If so which one? How would I get rid of it?