Do I suffer from this??

Hello, I'm 19 years old and feel I have been suffering from this problem for many years of my life... Ever since I could remember I've been "picking" the earliest I can remember was about maybe 3rd grade?? I started picking at the skin around my fingers with just my teeth then moved onto a pair of sewing scissors... I now just use tweezers around my fingernails and toenails. I pick the skin off and eat it...I also pick at the blackheads on my face with the tweezers or use a bobby pin. Weird I know! Every time I get up to go to the bathroom I look in the mirror just to see if a new one has formed so I can pick at it.... A more recent symptom I've noticed started about 3 to 4 years ago. I chew on my tongue for hours a day and pick and pick til it bleeds and often have to remove myself from the room out of fear of people seeing my tongue covered in blood. I go to the bathroom until the bleeding stops then act like it never happened.This is simply something I CANNOT stop. I try day after day to stop and keep telling myself how disgusting it really is but I can't stop. My tongue is almost always soar and I can't eat on certain areas of it.I try with everything I have but I always return to this nasty habit. I also chew on my lips pretty much all day. They're always sore and red. This is another thing I've been doing my whole life. I pick at my genital area sometimes but only if there is an ingrown hair because I enjoy peeling the skin off of it then picking the hair out with my tweezers.Another thing... My scalp. I LOVE picking at the scabs on my head or dry skin.I don't know what it is but I often avoid showers because I just want to pick and if I take one they're "washed away." As I sit here reading this I realized I've been chewing at my lips the entire time :( I have a certain spot in my room where I put my tweezers to make sure they're there when I need them! I'm not completely sure if all these habits pertain to this disorder but I need to know.