How do I tell fwb I'm pregnant...

Last month I started hooking up with this new guy... all I know is his first name lol he seemed nice and all but I didn't really discuss stds and pregnancy as I would normally do before I have sex with someone new (testing and I'm not on birth control) but after I told him I wasn't on bc after we had sex and he was cumming inside of me, he continued to do so another day after he was aware, and told me he didn't want a baby although he is clearly aware of the risk...( I should really have insisted with a condom, I know I'm stupid)

So now I'm pregnant, and I haven't told him yet. I honestly feel sick to my stomach at the thought of telling him, and haven't managed to see him in person for a couple weeks (he takes forever to reply. I really want to tell him in person)

I'm leaning towards keeping it, as I had an abortion last year (sorry if this sensitive) and it sent me to the darkest place I've ever been in my life... Im feeling quite depressed, i definitely know I should have been more responsible as I'm 21 and I don't even have my drivers license yet lol...but a part of me is a lil happy about my bean. Not sure if it's right to feel happy?

And how do I tell him?