My Combi Boiler has stopped working!!! HELP, ITS FREEZING!!!! :(?

Came in today and the house was, shall we say not as warm as it usually is but we never paid much attention to it. Only when my friend tried to do her dishes did she discover that there was no hot water, not was there any heat in the radiators. There are two lights on the boiler which are both flashing - one red one and one orange one. There is a guage on the left hand side which is at the bottom of the green band. Also, do we need heating to work an electric shower? lol. PLEASE HELP - I THINK WE ARE GOING TO DIE THE DEATH IF WE DONT GET IT FIXED BEFORE MORNING!!!! lol. Thanks.xxx