For the past couple of months I have been getting very nauseated or dizzy at random. I lost 30 pounds in 2 months. I have a hypothyroid disease, but It has never caused me to be like this Do i have an eating disorder?

We can't know if you have an eating disorder, based on what you've told us. With hypothyroidism, you are apt to gain weight, not lose weight. If YOU don't even know if you have an eating disorder, then chances are you don't, especially to have lost THAT kind of weight. With that weight loss, nausea and dizziness, there may be something sinister at play, and I strongly suggest you see a doctor, immediately.