Heartbroken

Ok so my bf (2 yrs together) broke up with me 3 days ago and I didn't eat for the first two days and now I don't fill like talking to anyone or getting out of bed or going to work. Idk why it's so hard for me I thought we were going to be spending the rest of our lives together. I have never bean this upset over a relationship. I still love him and want to make it work out.. Does anyone have any advised to help me threw this or threw that day?