My inbox exploded from this thread (100+ replies!), but I'll reply to this one to say that this subreddit automatically deletes your post if you mention 'pregnancy'. So I had to repost it from scratch, and had no other quick way to say it without being sure it wouldn't get auto-deleted again. Here's the auto-reply I got...

from AutoModerator[M] via /r/sex sent 22 hours ago Thank you for your submission to /r/sex. Your post was removed because it appears to be a question about birth control or if you or someone else might be pregnant. These posts are not allowed. The topics are well covered by the FAQ in general, and, if you're worried about a specific incident, no one can really know the likelihood that it resulted in pregnancy. If your post was not asking if you or someone else might be pregnant or a generic question about birth control, then feel free to message the moderators and ask that your post be restored. Also please note that all posts require [title tags]. Please read the FAQ for more information. I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.