I always thought mine were irregular until the trying-to-get-pregnant thing, and then it turned out they were pretty much totally regular, but I didn't expect a 35-day cycle.

Incidentally, when you go to the doctor when pregnant, they calculate how pregant you are based on a 28-day cycle and your last period, no matter if you know to within hours when you conceived and it has nothing to do with that. Silly little women couldn't possibly know, could we?