losing weight

will detoxing every weekend help me lose weight ? LADIES , WHAT ARE YOUR WORKOUT STRATEGIES AND ROUTINES AND EATING HABITS !!!! I'M obese for my height and every since I started on birth control the shot first I blew up I was at first 135 pounds then took the shot and went up to 166 so I got of the shot and started doing the pills and still didn't lose weight now I'm off of birth control and I weigh 174 . I'm 5 ft exact. I miss my old body . I'm about to turn 20 this Monday and I want to stay looking young and sexy and healthy. my grandma calls me fat but my boyfriend says that theirs nun wrong with me he loves my fluffyness. but I feel unattractive. please help me.