Gaining Instead of Losing

How much of a gain? Weight fluctuates every day do it could be normal fluctuations. Plus time of the month issues, bathroom habits, etc.

You probably aren't doing anything wrong. You just haven't given your diet enough time. Many people who diet do not see immediate weight loss. It can happen in fits and starts, and even with people who experience steady, predictable weight loss, it takes more than three days for that weight loss to translate to reliable numbers on a scale. You need to give the diet at least 3-4 weeks. Then check your weight and see if you've gone down a few pounds.

Maybe, like me, you suffer from the so-called whoosh effect.

http://community.myfitnesspal.com/en/discussion/797688/experience-with-the-whoosh

Second, the "weight gain" you are experiencing is almost certainly normal fluctuations due to water weight.

http://www.shape.com/lifestyle/mind-and-body/when-your-weight-fluctuates-whats-normal-and-whats-not

Since most of us can’t eat enough in a day or two to actually gain 5 or 10 pounds, if you notice a dramatic increase on the scale, chances are it's due to water, says Anita Petruzzelli, M.D., doctor for BodyLogicMD.

“Eating, drinking, urinating, having a bowel movement, and exercise can all impact your body's water composition and therefore weight," she says. For example, high-carb and high-salt foods can cause water retention and a boost in poundage, while exercise can lead to temporary water and weight loss.

So don't get too excited—or freaked—if you weigh yourself after a meal or workout. “Weight gain due to water fluctuation should normalize in a day or two when you resume exercising and eating a healthy diet that's low in salt, refined carbs, and simple sugars," Dr. Petruzzelli says.

This happens to all people. If you weigh yourself several times a day, you will likely notice that at certain times of the day you weigh anywhere from 1 pound to even 5 pounds heavier than you did first thing in the morning. This is not actual weight gain, it's water weight.

One bad meal won't make you fat... and one good meal won't make you skinny. Doctors, myfitnesspal, health journals, studies and articles... they ALL agree that healthy food habits and exercise is the number one way to lose weight efficiently and in the healthiest way. TRUST the process. The rest will follow.

p.s. also... if you're allowing it to stress you out, your cortisol levels will rise, and that can create weight gain. Slow down and maybe only weigh in once a week for a while.

I'll add the chart to all the good advice already given.