I haven't had a proper meal in days but I still gain weight.?

The reason you are gaining is because you are not eating. You are also probably not drinking enough. Water retention can cause weight gain too. You will retain water if you are not getting enough in what you drink and eat.

Also, how often do you check your weight and what time of the day. You need to check your weight no more than ONCE per week. It is best to check your weight in the morning before you eat anything. It can take several days to drop a pound and body weight is actually NOT as constant of a number as you might think it is. Water retention goes up and down during the day and your weight can change by a pound or two because of that.

One last thing, the average home scale is NOT 100% accurate. I have checked my scale's accuracy by placing on the floor in each room of the house. Guess what. I was a DIFFERENT WEIGHT in each room. Now I am 100% sure that I did not gain two pounds or drop two pounds just in the time it took me to get from one room to another room with the scale. Therefore, your weight gain could be as simple as the scale sitting on the floor differently than it did the last time you weighed yourself.

When you stop eating, your body goes into starvation mode and eats away at itself, and you put on more weight once you eat again. The best way to lose weight is eating healthy and staying active, not eating almost nothing

Your weight fluctuates by 1-3 lbs per day anyway.....

U should excersize daily

For burning calories u ate