I know this can be a bit difficult...in fact it feel like your whole life's shattered...! It seems as if perhaps your mum took it reasonably well, if she's willing to help you or just to accept it and talk calmly about it then it's a really good sign. In a way, you could see it as a bit of a relief that you don't have to hide everything any more (?).
It does certainly sound as if your mum reacted quite well, so you can be kind of glad in that respect. I was made homeless for 9 months after my parents found out!!
If you do need to talk aobut it though, my PM box is always open!!