I am 18 years old. Over the past couple of weeks I have gained about 10 lbs. I have not changed my diet or exercise habits. Also, I have been having frequent urges to urinate, and I have noticed a lot of swelling in my face...and no, I'm not pregnant. When I was 3 years old I was diagnosed with a rare kidney disorder but it was gone within a year. Do you think it's possible this could be related eventhough it was so long ago? Or is it probably nothing serious? Blahh its just really depressing gaining so much weight so fast.