Had Unpenetated, Unprotected Sex. Ejaculated Outside Vagina. Pregnancy Possible?

hi. doctors and all the specialists. i am very curious after last night when me and my girlfriend were on bed together. actualy i am pretty concernd whether she'z going to get pregnent or not. what happnd last night when we both sleepin together. all of sudden she took ma penis and started rubbing in her vagina. although at time i am about to ejaculate, i quickly had removed ma penis from her vagina. thats for sure that i havent inserted my penis inside her and also i didnt left my sperm her inside. but what i am scared of while rubbing my penis onto her vagina might sum of my precum or little amount of spern kind of liquide form which is not recognisable touched her vagina. is it the case where i need to do sumthing. or i am safe