My gums are receding and peeling. How bad is my condition? Am I prone to losing teeth? (Photo)

I'm 19, haven't gone to a dentist in 5+ years, usually brush once, sometimes twice a day, and don't floss. I may have been putting too much pressure on my teeth while brushing and picking at my gums too much. Recently, my lower gums have bled once or twice while I wasn't brushing, and my gums have started to peel out under my lower middle teeth. Those two teeth are also slightly loose/wobbly. How bad is my condition atm? Do I have stage 2 gum disease? Is it reversible? Will I be losing teeth?