This might sound silly but i genuinely dont know. We were not fully careful for like a second and now my mind is overthinking everything. Is even one drop enough yaar?
I remember worrying about this so much earlier! But yes, biology is crazy and even one drop is enough. My little one is 2 now and I realize how easily these things happen.
Technically yes, even a tiny amount can lead to fertilization. If you are worried about an unplanned pregnancy, taking professional advice from a doctor about emergency options is best.