Thyroid question?

I’ve always have a hard time losing weight and if I even looked at a muffin I gain weight. I finally asked my doctor about it and he sent me to a radiologist to get a thyroid sonogram. He just informed me that I have a 1 cm swelling? I didn’t understand what he was saying coz I was on my cell. I have an appointment with him next week to talk more. He told me I have to go to an endocrinologist. I had my blood work done too and he said my cholesterol was fine.

Does this mean I’ll finally lose weight? I did the atkins, south beach etc–went to the gym regularly– and I was really strict and I did lose some but not a lot. My friend who did the diet with me lost twice the amount of weight I did and really quickly–she practically had the same height and weight as I did. I gained the weight back twice as fast. It was horrible.