single and pregnant. advice please.

i just turned 20 today’s actually my birthday.

i also just got into a idk what to call it bc i didn’t argue or fight with the father of my baby because he has his ex constantly calling and calling his phone while he’s in my bed. i felt disgusting being touched by him i asked him to leave, offered to drive him home and he starting on the defensive that i’m crazy that i’m gonna follow him. when all i did was sit down in my car bc i’m 14 weeks pregnant extremely dizzy and barely have kept any food down the past 3 days. i explained that i just need to sit down because i feel sick. and he started yelling at me. so i said forget it. i told him if he wants to leave he’s never seeing me again and he walked away. so i called my friend and i’m at her house now because i’m so extremely upset and i feel so sick. he’s been cheating on me with his ex, i knew that but he promised he’d stop and he wanted to be with me, i guess not. i feel so stupid and i should’ve left when i found out he was cheating. he told me he doesn’t want to do this, and quite frankly all he’s done since i found out i was pregnant is cause me a lot of stress and hurt. so i blocked him. i can’t let him in anymore, i need him to be cut off. i need him to be gone. for good, it’s selfish but i need to be okay for me and my child.

anyways any advice for a young single mom, anything would be helpful. i feel so empty right now like my heart has been destroyed.