Pregnant and ex told me to go die.

He sounds like he doesn't want to face reality. Your best bet is to let him go and start tackling this responsibility on your own. What you want to do from here on out is your decision. Don't worry about him anymore, he's decided to run with his tail between his legs.

makes sense what he did in a way...yet I'm still not sure why he turned around and said the complete opposite...in one day...sometimes people will not talk to you for fear of saying the wrong thing...or hurting you...but if you truly love someone why would you say you love them...then walk away from them

i don't get it

He sounds insane to me, or he just cracked and lost his mind.

"Pregnant and Ex told me to go die,"

He probably meant "Go dye...your hair..."

"I'm just trying to understand what his thought process could possibly be. Any ideas?"

I got no clue

We all deal with things differently. You know, HE probably doesn't even know how he truly feels about this. He could be, scared, confused, upset, lost...and doesn't know how to deal with it. It's unfortunate that he's being mean to you and saying hurtful things. But at this point there is nothing you can do. If you bug him about it, he will feel pressured, and will continue hurting you, verbally. I'm not saying it's ok for him to treat you like this. It's messed up. Who knows, after a couple of days, he might try to contact you to talk about it.

I suggest you send him another email, explaining everything, and maybe show proof that you are pregnant. Then after that, don't contact him anymore. Accept the fact that YOU will have to deal with this without him. Don't rely on him to help you. Not saying you have to deal with this alone. Consult a doctor, friend, a trusted adult. And start thinking of what you want to do, and what you have to do.

I'm really sorry for what you're going thru... but everything will be ok.

Honey, he may have some mental issues... If he's snapping and changing his mind so quickly. I'm thinking either bipolar or schizophrenia.
That or you did something very cruel to him that he may have found out about?
Good luck with your decision, I've been in your position and I know firsthand just how hard it can truly be. You should really think about it though, your baby may carry some of his same traits, if he truly does have a mental illness - and do you really want this person to be involved in your babies life if he's going to snap like that - imagine how he could treat your child..? Or if you even WANT him involved, however it sounds as if you do.
Best wishes to you.