There are also a number of groups on Facebook that could help, such as Fightback. Its only natural to be seriously rattled after something like this, but there are a lot of good people who understand and know how to help you.
Try not to stress too much, because its bad for your health, and it is very highly likely that you will get the help you need, and quickly. This sort of injustice has been going on for a while now so people have had time to work out how to fight back and win.
One thing you need to do urgently is let your local Council know what has happened because the JCP will have let them know you are no longer getting money from them, and unless you actually tell the Council, your Housing Benefit and Council Tax benefit will stop too.
You are also entitled to 'hardship payments'. They don't tell you that you are entitled to them, but you are, so ask for the forms.
And you need to appeal against your sanctions as soon as possible. Most appeals win, but a lot of people are in too much despair to appeal. Remember that most people win.