Hate the weight gain!!!!!!!!

Hi every one when I got out of work I went to the gym workedon the treadmill did different work outs for 1 hour 10 Mins did3.75 miles and burned 452 calories wow it felt good even thoughI hurt when I got done.I gained 10 lbs. since I quit smoking andI'm sick about it I don't want to gain any more so I am goingto the gym monday-thurday for a while.How much weight isexpected to gain after smoking I know last time I quit I gained20 lbs. this time no way no how Staying in a size 12 for now later maybe a 10.Not going to smoke I hope not I made a pledge today.