Help! Please...

I'm 5'4'', female, 18, and I currently weigh (give or take) 142 lbs. It isn't the most I have even weighed in my life but I'm slowly progressing that way again! Almost two years ago I was almost to 150 lbs, and I started p90x (started eating about 1250 cals) and got down to about 132. I then stopped p90x (because of work/starting a new college) and have slowly been making my way up again. I have now started a p90x/Insanity hybrid (and eating ~1250 calories again) because I am so used to the p90x workouts (I get bored with them) and I like the way Insanity works. I haven't lost or gained anything though... that's my problem. I don't carry a lot of weight in my upper body (I am semi-strong however, ex-volleyball player/farm girl lol..) but I do have bigger thighs (yucky).. Any advice?