Hello & Welcome, Meep!

Excellent post -- it wonderfully documents what you are experiencing. Please consider saving what you've written and possibly using it if you find a counsellor or doctor you trust.

I hope you can avoid further experience with cutting. The urges and the causes of the urges are powerful and deep, though. If I have read your post correctly, your family is not so supportive. Is there someone at your school (teacher, counsellor, nurse, etc.) whom you could approach?