You may still have residue from all of these substances in your system. You're probably suffering from exhaustion also. Your body is in a state of depletion and is malfunctioning. At your age you should be enjoying several erections daily. By polluting your system with drugs, you are setting yourself up for a bleak and brief, dysfunctional sexual future.
Recreation is a refreshment of the body and mind.
Drugs stupefy the body and mind. Your spring break is over, Saggy. Do a cleansing for your body. Drink an ounce of water for every two pounds of body weight, each day. Eat fresh fruits and vegetables.