I'm sorry you're feeling sad.
I agree with previous poster that at some point you might want to think about taking something. I think a couple of months is a pretty long time to feel consistently down.
I've been having the same sorts of feelings/fears about my weight, though I am in a whole 'nother weight range. When I got down to 173, I felt so thin most of the time (and then sometimes I would realize that 173 is actually pretty darned fat if you're 5'0"). But now I've gained back 15 pounds and I am feeling SO FAT. Like, I feel that really cruddy feeling where every time I move I feel how fat I am. I have been been heavier than this without feeling so yucky about it, but now that I have tasted what it's like to be lower... well, I don't like being this heavy!
Anyhow, last week I was freaking out because I had my b'day (monday) and thanksgiving looming ahead of me. I was planning on making a great t'giving dinner for hubby and kids and really looking forward to it. I promised myself that I would get back on a good eating jag as soon as t'giving was over, but as you can imagine I have made those promises before. I have to say though, that that fear is pretty motivating to me (at least sometimes), and getting back on a good eating plan is such a relief when you've been feeling fat and scared about it. I did start right back in yesterday and I feel so much better emotionally and physically. Instead of having this big hard thing looming ahead of me, I'm in it and it's not really that bad. I would love to eat something yummy, but I'm already enjoying the benefits of sticking to my plan. I'm .8 pounds lighter but I feel a huge weight lifted, iykwim.
I wonder if your mood would improve if you got back on your plan. Mine always does, but that may be because I do a ketogenic diet. I'm not sure if other plans have this same effect or not...
Btw, it's not everyday I see someone who was in the same height/weight range as me. I'm curious about how you felt at 130 and whether after getting there you felt like 111 was still sensible. I set 114 as my goal, so pretty close, but when I was younger I felt pretty good at 135 and great at 130. I was always softish, but I had a nice shape and wore it well. I felt attractive and energetic and comfortable with my body at 130. Otoh, if I was into women, they would not be stick thin. lol I'm so curious to see how I feel at 130 and 114. I hope I make it there!