Undecided

I’m 18 and I’ve been on birth control for almost 4 years now .. it’s caused me to go from 135lbs to 190lbs ( I danced in highschool and still couldn’t hold the weight down ) well tomorrow I have my appt to get my birth control again ( the shot ) any tips ? Should I continue or should I stop? I’m not dating it sexual active so I’m not worried about getting pregnant lol .. I want to stop to help me lose weight but then again I want to play it safe ( we’ve tried the pill but I’m I work crazy hours at work and never remember and they won’t let me do the iud or bar )