Anytime you put "penis in vagina" you risk pregnancy. Precum doesn't generally have a lot of sperm in it, but it does have some. It sounds like you've taken care of things as best you can for the moment, but is there any chance at all? Yes, there is.I would suggest you treat your body with kindness for the next few days, and let the Plan B do its job. I'd also highly suggest that you and your partner have a serious sit-down discussion about birth control options, and what you plan to do in case of a pregnancy. Be very open and honest with one another, and don't hold back. This is the kind of stuff that makes or breaks a relationship, and it's better to know how it will work out BEFORE you find yourself alone with a blooming belly.