Im Working So Hard And Gaining Weight

Agreed. I've upped my workouts, decreased my calories, and my weight is not moving. I'm going to weigh less frequently and measure more frequently.

Bottom line, keep doing the things you know you should be doing, and you WILL get there! For me, I know (historically speaking) it takes about 6 weeks of committed hard work to see it show up in the scale as my fat turns to muscle, and my pants get bigger. It just takes a LONG time to show up on the scale for me, no matter how "on program" I am.

Just keep doing the right thing - you will get there!!!

Diet has more to do with it, from what I've found through the years of losing weight. Exercise is an important element too, but diet is even more so. 5 lbs in one day is not even going to be a fat gain . . . water retention, perhaps, but not actual fat. Doing some research regarding how the body works . . . how weight is gained and lost, might be beneficial to you. Its a lot to explain . . . search the forums here on MFP, they are a gold mine of info!

Pay attention to what you're eating. Make sure you're only eating fresh fruits and vegetables, whole grains, lean meats, low fat dairy and are getting at least 8 glasses of water per day. Avoid processed foods and refined sugar. Try to get more protein than carbs, keep your sodium and fat low.

Try exercising less. 3 times a day is excessive and puts a lot of stress on your body which can negatively affect your weight loss. Make sure you're meeting your calorie goal and are eating your exercise calories. Only weigh once a week or less and take your measurements as they are a better indication of how your body is changing.

In order to lose weight, yes, you need to burn more calories than you take in. But you need to be accounting for the calories your body burns every day just to function normally (basal metabolic rate), plus the calories you burn doing every day activity.

Here is a calculator that can be used to determine the number of calories you need to take in to maintain your current weight:
http://www.shapefit.com/dailycalorie-calc.html

If your net calorie intake is 500 calories less than the number that the calculator comes up with, you should lose roughly a pound a week.

Net calorie intake = calories eaten per day - calories burned by exercising

Of course, it's not really that simple due to many factors including water retention that can occur (which for me happens when I eat too much sodium or around a certain time of the month) and also differences in personal metabolic rate. But, you get the idea. You don't need to burn off every calorie you eat with extra exercise in order to lose weight. A fair amount of those calories are burned off just through normal daily functioning of your body.

Yes. You are eating and working out, but what kinds of things are you eating? What workouts are you doing exactly. You said that you lost 15 lbs in 1 1/2 months so it sounds like you know what you are doing. I have lost 60 lbs in about 8 months and have managed to keep it off! I will help any way that I can.