scared of what to do

Before I say this do not judge .  So I had been talking to this guy sinc last year he knew how I felt about him . We've been sleeping together since last year most the time we were protected . Well Saturday night I had gone over to his house and we had sex and then had sex the next morning and once I got home I was looking on Facebook and a girl had tagged him and her Tigray her in a picture I asked him about it and he said. Her and I are talking so I got pissed off then he told me we should probably stop this. I'm sorry I should have told you. And from what it look like it they been seeing each other since the begins of April 😔 all he says is sorry but if he was he wouldn't have done that to me.  But the thing is I've been feeling realy weird lately. I'm on birth control the arm implant but I'm scared that I'm pregnant and if I am I want an abortion I'm only 22 I didn't want a kid right now and I never want to see his face again does this make me a bad person ? And to make me feel worst about myself he did it days before my birthday which is today  And I had a doctors appointment on may 16 I'm just scared they are are going to tell me I am . And if I was would you tell him ?