Should i go back into hospital? psychiatric unit?

I've suffered with depression since i was 13, i am now 20 years old. I got servere depression when i was 15 and tried to kill myself 3 times, once i very nearly died. I was in hospital for just over a year and got sectioned and everything, then i got better and came out, but went back in again when i was 18. The second time i was only in hospital for about 4 months and i wasn't sectioned then i was a voluntary patient. It's 2 years later from that and i've recently become severly depressed again, for about the past month. I can't stop crying and i cry everyday just randomly, also had serious throughts of cutting myself, and killing myself. I think about suicide a lot like everyday and alot at night, i just don't know what to do anymore. I've been to see my doctor, but it didn't really help. I'm an adult now so it's hard to get counselling and it takes ages for it to come through. I'm just so lonely and wish i was dead. I've been thinking about going into hospital, cause i've been trying to deal with it on my own, and thought it might get better if i'm around family and stuff, but it doesnt, it just gets worse everyday and i can't take it anymore. I don't know whether to go into hospital cause adults wards are so horrible, but then i'm not safe at home, and i can't go on like this, i can't even get up in the morning, or eat or go to college. I haven't told my mum yet cause i know she will be really angry and i don't want to hurt her or any of my other family. It will just tear her apart again and i just feel terrible cause she went through so much crap last time. I don't know, i just really need some advice cause i am just in a dilemma about what to do at the moment.