All 3 were unplanned. i was told at age 17 that I could never have children, I got pregnant a year later. I was told after my first that it was unlikely I would get pregnant again, 1 year later I was pregnant again. 8 years later my oh was told he would be unlikely to father any more children, I was pregnant within weeks of this announcement.
I planned very carefully. I set out to have three daughters, all to be born in the summer so that outdoor parties could be more fun than indoor ones. I got the dates right - all in the summer holidays - but I ended up with 3 boys.