Pregnancy Scare

I recently had sex with my boyfriend and right now we’re currently using the pullout method. If we went a few rounds and after each time he ejaculated but pulled out, is there a chance I could be pregnant. I know there’s always the chance because of precum, however I’m wondering if the chances are higher because of him reinserting it multiple times after. He did wipe himself after each time, I’m just still pretty nervous. Please help!!