It's my fault. I should know better 😭

He said it was my fault for not taking the Plan B pill 💊. I have an irregular period. I missed my period for 3 months. One night I had sex with a guy who I was having sex for a year, that night he decided to cum inside of me and the next day he brought me plan b pill. I don't take the plan b pill because I thought I won't get pregnant that easy..because of my irregular period.

Found out I was pregnant and I told him. He gets angry at me and saying the pregnancy is my problem, not his. And he doesn't want anything to do with it.