Should I tell him..?

Soo basically this guy and I dated off and on for over a year now. Currently off, and it’ll stay that way.

Anyhow, my period is late. Three days late and I don’t feel any symptoms of it showing up. (I usually tell when my period is coming) and my period has never been irregular, it’s on time every month for over a year I don’t feel as though I have more stress than usual, and I’m not on any medications so I don’t see a reason for it to be late.. besides pregnancy...

Well I’ll be 21 in less than two weeks, he is 26.

He told me about 10 months ago, if I ever got pregnant he would expect me to get an abortion because he said he doesn’t want kids. And we argued over that and I told him I would think about it if the time came just to end it. Well. I definitely don’t want to be pregnant but I refuse an abortion. I couldn’t live with myself if I ever had an abortion.

Soo I’m waiting for my period to be up to 5 days late before I test. And I’m just wondering..

Should I tell him, my periods late and it’s a possibility or wait to see if I’m actually pregnant?

And if I am actually pregnant.. since he doesn’t want to be a dad AT ALL and wants me to get an abortion if I were.. should I even tell him?