i wont say "i know how you feel" because i dont, but back in lower school i was in a similar situation, with not knowing who i could talk to. at one point i was self harming, and a friend i could trust, who was a few years older found out, and told a teacher with my say so for me, so i didnt have to.
talking through things helps drastically trust me.
the connexions people help MASSIVELY, yes there is that confidentiallity issue, but i was seeing my connexions woman from year 8 to year 13 and only had 1 issue with the confidentiality, and it got solved quickly, she realised that she shouldnt have said anything, but knew she had too...
i know july seems so far away, but it isnt, trust me. you can do this, keep going at it, and once you hit that point you have the WHOLE of summer to look forward to!
ill give as much advice, or just be someone to listen to if you ever need, just PM me [=