Sorry to hear about your break up. Just know that things do get better and you will pull through. I have a 20 year old daughter and we've been through a lot of break-ups over the years . . .in fact, she was engaged earlier this year and ended up giving him the ring back. It was probably the hardest decision she had to make and it does take a toll on all sorts of emotions. But it just wasn't meant to be.
Just give yourself time, do something for yourself, have a day of pampering . . .go out with your girlfriends and be crazy . . .smile, it will get better for you!