Am I okay

I have a doctors appointment next week to change my birth control but I’ve had sex twice in the last week. My period isn’t due yet but should be within the next few days. We used a condom each time and he pulled out with the condom on before he came. So my boyfriend never actually ejaculated in me but I’m scared of precum. We checked the condom and nothing was leaking out. He said the condom didn’t slip at any point and the whole time the condom didn’t break or tear. Could I be pregnant from precum that some how leaked out with out us noticing even though nothing was leaking out when we were done