I don't want to say "on accident" but a few of mine were surprise pregnancies. I have had 6 babies and 2/6 were surprised! Happily welcome ones I will add:) the others very planned!
I'm with you... I don't like the term accident. 2/3 were surprises... they were planned (for the future, not then!), and we weren't preventing, but since my cycle hadn't come back yet, we didn't really think it would happen. What a pleasant surprise when it did.... TWICE! <3
Mine was "planned" we wanted to have one but I just went of birth control and we said whatever happens happens! And she happened!
My now fiance and I both thought we couldn't have kids. So "planned" doesn't work for me, not really an accident either. But a surprise? You betcha!