Hi, I am not sure if this is in the right forum, but i'm wondering how I can go about making my body less..Strange. Let me explain.

I was pudgy (about 130 pounds at the most..I'm a 5'4 female..But I ate junk all the time) until about 16 or 17, when I decided to eat healthier. I didn't really exercise a lot, but the pounds just came off, and by the next year I was down to about 115. I then went off to university, where I defied tradition and lost more weight (not on purpose, either). I'm a vegetarian, and am very picky, so my food is not exactly diverse. But anyways, my problem is is that i'm now about 104 pounds, and I don't want to be this skinny! But at the same time, I dont want to be pudgy again, because I feel more confident this way. I am strange though in that i'm bony in some areas, like my collarbone and shoulders, and i'm practically flat-chested, but my belly is always a little flubby! I want to gain muscle, but I don't know how, since i'm very busy (and unfortunately lazy), and dont eat enough protein (i dont think, anyway).

This is pretty long and rambling, but anyways, I was wondering if anyone knows how to gain enough muscle that things kind of balance out, and I wont be bony some places and flubby (for lack of a better word) others. I have literally no money to spend, and I have one set of 3 pound weights. I would like to gain weight, but not really fat. I do gain fat pretty easily, I think. Anyways, hopefully someone has some ideas! Thanks.