I am a 23 year old Female who has always been very healthy no colds never had a head ache ect... one year ago in February I had a series of infections then started to gain weight despite being very physically active and on a very strict diet. I gained 60 lbs in 7 months started to get head aches, nausea, severe fatigue(yes I have had a pregnancy test every time i go to a doc, not pregnant), I have trouble with my body temperature getting hot flashes and sweat when I'm cold, I developed very severe mood swings that go from very mad to very sad. I started to grow facial hair on my chin, and most recently developed reddish purple marks on my stomach which resemble stretch marks but change shape over time and fade then more appear. My doctor thought It sounds like cushing's disease but test came back normal, I have had MRI's, blood test, X-rays all come back normal and inconclusive, I don't know what is going on with my body but it is really beginning to worry me. please if anyone knows or has an idea of what is going on I would really appreciate the advice. thank you.