Sorry to hear that Discworldaholic
Like everyone's saying it's hard to come to terms with, especially as you lost your father as well so recently.
I used to work in a Probate office and it's not too unusual for spouses to die only weeks or even days apart - I mention that only because when I saw their children at interviews they were often quite upbeat about how their parents were 'back together' now, because it had been so horrible to see mum or dad really inconsolable.
Like everyone's saying - plenty of support and places for you to remember (or rant even) if you need to. 2010 is just another year in the end and you will remember your mum and dad no matter what.