Hi LSB - yeh, I had difficulty with agreeing with FF this month - it initially said I o'd on day 15, but I reckon I o'd on 17. This makes it difficult to know when to test - I'm going to hold off until 14 DPO (based on ov at cd17) which is Wednesday for me. This was our fourth cycle at using pre-seed - I really do think it helps for us, as I have very scant CM so have always had to use a lubricant even before TTC. The pre-seed dries up faster than normal lubricant though, so we generally use two each time. Hope that isn't TMI!! Have fingers crossed for you that you caught the egg this month!