Miscarriage while broken up

I've recently discovered that I've had a miscarriage while I didn't even know I was pregnant. I feel incredibly low and guilty from the situation itself, but I'm no longer with the father. Three weeks before this I found out he was cheating on me and we completely cut contact for the greater good. It's been a week now and I still haven't told him. I'd feel extremely ashamed and embarrassed calling to explain such a situation, so much so I'm considering not telling him at all as it's all been said and done and he's now a thousand miles away for college. Honestly I don't know what to do, part of me feels morally wrong not telling him as it was apart of him too, I'm still dealing and processing myself, I'm still incredibly heartbroken and angry about what he'd done to me that I can't face him. I just don't know what to do.