I know I’m dumb I don’t need rude comments but is it bad to not tell him?

I was hooking up with this guy for a while and ended up getting pregnant. At first he respected any choice is made but then quickly switched and told me he’d hate me if I didn’t get an abortion and that he wouldn’t be in the child’s life he’d just send money every once in a while and if I wasn’t okay with it that then he would take the baby and not let me be in its life. Well it scared me and I thought about an abortion but had a miscarriage before I could go through with an abortion. This was a month ago. I was so sad and he invited me over and I went because all I wanted was comfort from him since I couldn’t tell anyone else. Anyways my dumb ass had sex with him. And now I’m pregnant again. It’s so weird because I have PCOS and tried for two years to get pregnant with my ex and it never happened. I gave up and now I randomly get pregnant twice in a row without even trying. Is it fucked up if I just don’t tell him this time around and just move on with my life and my baby? He was so controlling last time and constantly stressed me out and I honestly believe it contributed to my miscarriage. Don’t judge me y’all. I’m 26 and have my own home and I’m completely financially stable.

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Edit: thank you guys. You’re all right I do need to tell him. I’m so scared. Last time he was extremely controlling and mean. He would even control what kind of music I was “allowed” to listen to while pregnant and told me I’m not allowed to leave the house anymore after having the baby even if the baby was with him (even tho we wouldn’t be together. He’s weird)