well it could hvae just been water weight. you shouldnt weigh yourself everyday only once a week like every monday

Stop putting yourself on a weighing machine.Sometimes you dun see immediate effect in losing or gaining weight.  You may stop eating and wondering why you are not losing weight because it takes time.  And sometimes you gain weight even if you are not eating because the weight came from some time ago.

Dude, dont be worried or anything... The exercise you were doing was turning the excess fat you had into muscle ( as it does ) and it is a well known fact that muscle weighs ALOT  more than fat does.My advice would be to keep doing the exercise if you can because it will build you up and make you look stocky as hell ( which girls dig ...  unless tehr small in which case you could break em... ) ANYWAY if you are too busey doo a few more hours or so at the weekend and don't worry if you mis a day or somthing cos its cool just dont eat anything unhealty if u can.But if you want to lose weight all togeather... keep eating with no exercise untill you get a bit below the weight u want to be and then start exercising Jogging is awesome cos it trains up most of your body and espically your legs which are most important to me :)GOOD LUCK M8!

this could be very serious or it could just be the balance of your health and eating habbit.but just to be sure i think u should go see the doctor