I have always had a problem putting on weight, even just a couple of pounds. Within the past 2 months, I have gained 7. 2 months ago, I was at 113 which has been a steady number for me for the past 4 years, and I am now 120. I also, what seemed like within just a few weeks, lost a significant amount of hair, particularly in the front - my widows peak has decreased significantly. My mother does have female pattern baldness, and all three of my older brothers started losing their hair in their 20s (I am 25). I did not get my period this pass cycle. However, my periods have never been regular (besides when I used birth control... which I stopped 4 years ago). I have taken two pregancy tests, which came out negative. What gives?