Help!

Hey guys! I'm Sarah I am 22 years old, and I have let myself just go down hill. I was a cheerleader and dancer all throughout highschool and then continued dancing through the beginning of my sophomore year of college until I had a tumor and needed to have it removed. I'm a junior full time student and I'm on the birth control shot which has made me gain an unimaginable amount of weight. But it doesn't help that I am not eating healthy and I am stressed and I have no motivation to go to the gym that is right down the street. I NEED HELP. I know it all comes back on me and starts with me but maybe you guys can help push and motivate me along the way. I decided to start this journey tomorrow because I am getting scared for my own health. Support, friends, motivation would be lovely and I would love to help encourage others too!!