Chance of getting pregnant??

Betzy

So it says I have a 11% high chance of getting pregnant. My bf never cums in me and we have sex without protection. We just had sex yesterday and the day before without it. He told me I should be okay because he never cums in me, but should I buy plan B? Also, I'm still new to this so I'm tight so it makes it a little hard for him to Yeahh....