Is Pregnancy Possible Through The Touch Of Semen To Vagina?

i didnt notice wen the sperm came out.i juz touched her vagina with my penis.i think a drop fell on her vagina.but the penis didnt go inside even an inch.she noticed the flow in just 1sec n run to the bathroom and washed.her hymne is also not broken yet.is there any chance for getting pregnant.i am very tensed