Awww..so sorry to her about your argument with your mum. But I hope it will pass, she is your mum after all;]
And, yes of course take a week away with your girls if you can. it will definitely help you forget him at least for a while. And then the more time goes by the more you will be able to spend without thinking about him and it will all be good again eventually....
And I feel horrible at the moment actually. I can see on facebook that HE was logged in almost 9 hours ago that was 5AM. Now it's extremely unusual for him. He is most of the time on fb if he is on his computer and even when he is not, he still checks it every ones in a while..so I just can't let go of the thought that he got up extremely early and drove to another country to see his ex. I know this sounds ridiculous and I sound like a crazy stalker, but I am just can't help it... It's my worst fear that he will get back together with her. That would mean he never meant anything he told me and all the reasons he said why he didn't wanna be with me, were all lies... I don't know how I would survive that...just wanna cry again thinking about all this..