Heartbroken and physically reacting. Never experienced this before?

I broke up with him over a week ago and since then I haven't physically felt like myself. I haven't eaten a meal or slept well. I've tried eating and couldn't keep it down. The only thing I can keep down are smoothies, coffee, and water. Every time I even think of him, I become extremely nauseous and my throat closes up & becomes dry. Sometimes I can't breathe. I literally feel a stab through my chest. All of this is only when I think about him or I'm reminded of him.

I don't understand why. I don't love him. We broke up because it was the logical thing to do. I understand my mistakes and learned from the experience and also realize that this will happen again. Heart breaks are apart of life. I miss him so much but I know that I can't do anything to fix what happened. Neither of us can. It wasn't meant to be.

Its strange because at times, all of these symptoms come back and I get this overwhelming pain; its almost like I feel what he feels. Is that even possible? Or over-dramatic...

...so why is my body reacting this way still? I'm trying my hardest to move on and its hard when I constantly feel like this. My body has never reacted this way over anything. Not even death.