I do roughly an hour of excercise a day and what healthy and I have gained 5kg and look bigger in apperence, how xan I loose weight?

Wt control. I wonder what kind of exercise you do daily and if it is aerobic or not. You may need to have your thyroid gland checked with a simple lab test. Otherwise, try reducing your caloric intake by 300 calories per day and increase your exercise by 15 minutes a day.
Muscle weight. Muscle weighs more than fat, so if you have gained muscle weight then there really isn't much to worry about. Muscle also tends to burn more calories even at rest. The key to loosing weight is consuming less calories vs. The amount you are burning. Consult your pcp to set up a exercise program that is best for you.