Hi Adam224 -- up top I want to be very frank with you about what I'm seeing in your posts here and in other threads. I know that you've said that you're asking these questions not out of anxiety but for understanding, however... something I want to point out is that we have explained why pregnancy in this scenario is highly unlikely quite a few times at this point. Mo also explained this in the older thread you found and responded to. As a group of folks what deal with these kinds questions a lot, we've come to recognize the need for multiple explanations by different people as a symptom of anxiety, anxiety about pregnancy in particular. We know that the possibility for an unplanned pregnancy is very stressful, but we have very strict boundaries around this kind of questioning. We're here to help you, but the way your questions are unfolding is starting to brush up against our policy,
which you can read here. Because of this,
we're setting the limit with you of no more asking if a hyper specific scenario like this can create a pregnancy. You are more than welcome to keep asking us questions and using our services, but we ask that you consult our resources for very specific and situational questions going forward.
Something I want to make clear is that sperm aren't very strong or very advanced for being the thing that sets a pregnancy in motion. As I said, ejaculate dripping anywhere or moving in any way outside of your testicles (and not inside a vagina) does not equate the sperm swimming toward the vagina to get inside. If they were ejaculated on breasts or another part of the body, they simply don't know where to go. And if they were to make contact with water in the shower, that complicates their little existences even further.
Who's Afraid of Sperm Cells? explains how volatile sperm really are. Another resource that might help is
Human Reproduction: A Seafarer's Guide. I also
found this advice column where someone asked a very similar question to what you've been asking about.
Additionally, many people reduce the chance of getting pregnant (and relieve some anxiety) by using contraception. What do you and your girlfriend use? I don't believe we've discussed this yet.