Thanks Ahurani.
Yep, cycle was up the putt prior to DS1 - clomid helped us conceive.
DS2 was a surprise package - I didn't actually get AF back after DS1. Geez, guess that means my cycle must've been about CD380 (we conceived around the time DS1 turned 1). LOL!
I wouldn't be at all surprised if I've had an anovulatory cycle, but O symptoms this cycle were considerably more prominent. Probably clutching at straws but I'm realistic.