Eating right, exercising, gainin and losing same 4 pounds? H

Hi there! I am very frustrated! So I need to provide a lot of background info on me: I'm 19, 5'2" and I lost about 20 some pounds 2 years ago, fell off the wagon with freshman in college weight and then 2nd semester decided to jump back on. January 2nd 2011 I recommitted to a healthy life style but I actually restricts calories to 1000 and ended up "cheating" a lot because I was mentally so drained from the little calories. AND I didn't lose any weight. I decides in April (yes I was failing for that long to lose weight) to allow myself a teeny bit more wiggle room and I stuck to the net calories deal where I ate back my exercise calories. I lost some weight actually maybe a pound or so. But I still was often under 1000 calories net for the day all the way through the 2nd week of may. Then I began to increase my net to about 1000-1400 NET calories, eatin back exercise calories like a good myfitnesspal-er should(; it is now almost the end of June and I am STILL failing to lose weight. I'll go from 131 to 136 week after week yoyoing between those numbers!!! Have a totally screwe up my metabolism with the intense restriction between Jan and April? I this why my weight is resistant??

Exercise: I mix up what I do, I have a HRM, I exercise 4-5 times a week often burning between 300-700 calories. Mix of strength training and cardio. mix of types of cardio like kickboxing, biking, and running. I'll often run 5 miles a week and bike 13 miles a week, etc.

I feel like I've tries everything. I made my diary public so you guys can take a look. I've tried zigzagging calories, taking rest days which I wasn't too fond of, eliminating processed food, eating mote fruits and veggies, just please help? I wanna know that there's hope of reaching my goal! This is a great myfitnesspal community we have here so thank you in advance and sorry for the long post!