I can relate to that very much. My SI was at it's worse back when I was a sophmore-junior in high school. But back in 7thgrade I was found out my by school counselor and she threatened: either you tell your parents or I will. One of the most terrifying things ever but the ultimatum worked. And it is always nice to have someone that is supportive and nonjudgemental to hold you hand and kick you ***** if you need them too. And there is no shame in being afraid there is always someone willing to help and not judge, just gotta find them.