I was still stressing over this, so I phoned Clearblue and asked them about testing just once a day first thing in the morning, as I have read that LH surge is usually first detectable from around midday, meaning that by the time I get my positive the next morning I might have already ovulated!? They advised me that the second peak day could catch the egg after ovulation.
I'm going to post details if my attempt. I'm thinking we might not have done enough to make conception likely. I'm 38. DH is 44.
I only tested with OPK once a day when I woke up.
I'd be very grateful for your thoughts.
Sunday 11pm - DH released outside
Monday 8am negative opk
Monday midday - DH released outside
Monday 2pm, 2hours after release - DTD
Tuesday 8am negative opk
Wednesday 8am positive opk
Wednesday 9am - DH released outside
Wednesday night midnight - DTD

