Why?

After my exN texted me yesterday I blocked him on everything. Even though I do feel like I escaped a living hell ( I was only with him 7 months) do I feel like a piece of my body is missing. Is this normal? Will it get better in time? I keep reading and reading here and it has been a true god send. I guess I'm just missing him physically (cuddling ect). Not sure. The pain is strong. But also the anger the anger is stronger. Ok. Going on a run. Thank u everyone.