Would this be a bad idea?

Im 16 i just graduated high school and i have been at home everyday since may 11 (graduation) . Only place i go to is the grocery store and stuff its summer i cant even walk the dog. Ive been really bored so i eat and im gaining weight ive been crying and just been depressed AF i dont know what to do anymore . When i turn 18 i want to move out And never call them or come back i feel like im gonna regret it but i feel like a prisoner i cant even walk in the neighbourhood. I talked to my parents and they said im going to get pregnant and start smoking. i cry like every night No joke and i keep eating