What Causes Soreness In Chest?

hey my names rondalyn. my problem is more internal than external. at the top of my rib cage in the center, just below the breast, feels caved in and sore/brused. then when i feel around my ribs i feel something sticking slightly out mainly on the right side. i've been up for 3 almost 4 days, no fluids or food, but alot of sex. my mouth is raw and my lips are dryer than a desert. im on the depo shot and those emotions combined with meth has made me up and down. on top of that i smoke weed/cigarettes and feel like i cant breath. sorry to say this so bluntly but what the fuck is wrong with me?