Pre-cum

SKI111906
My boyfriend and I were having sex a week or so ago. He accidentally "got off" before he  new it. Didn't feel it or nothing just happened to notice there was a lot of sperm. He always pulls out but this time he didn't because it was unexpected! I know he rly didn't get off that time because we finished having sex after and we never have sex twice 😂😂
Is that pre-cum? I have never had that happen before and can it get you pregnant. ( I feel like I should know this but I have heard different things)