Hi - as pdmcd17 said, I think many of us have been in a similar situation.
As to the general issue of the ongoing pressures of continual BDing, there are so many factors that can cause trouble - tiredness, stress, other things on our minds, other things going on in life, the potential for boredom and a feeling of the act being mechanical and devoid of fun, pressure on him (and the very real physical difficulty of needing to perform repeatedly, on demand), pressure we feel in terms of wanting so much to be preggers and the loud ticking of that damn biological clock. Etc etc. It's no wonder that it's not always perfect, and each month brings its own challenges. All we can do is our best, and the same for our OHs, we can't ask for or expect anything more than that.
As for the second issue in your post regarding this month in particular, you say you BDed on the days before O - so I definitely don't think you should beat yourself up, or your OH, as that is a perfectly acceptable amount of BDing, and is enough in itself for conception to take place. I've read many places that the two days before O have just as much potential for conception as O-day. I've often heard it suggested that you should try to BD every second day throughout the month to make sure you don't miss the 'fertile window', in case of any problems with OPKs. Fertility Friend website says the following about when is the best time to BD, so I think you're def ok for this month:
"Your theoretical fertile window is six days long, comprised of the five days before ovulation and the day of ovulation. You only have a chance to conceive when you have intercourse on these days. This means that pregnancy is technically possible from intercourse on any of these six days. The likelihood of actually becoming pregnant, however, is dramatically increased when you have intercourse in the three days immediately leading up to and including ovulation. This makes a practical fertile window of just three days.
For conception purposes, it is thus ideal to have intercourse during the three day fertile window which includes your ovulation day and the two previous days. In a recent analysis of 119,398 charts from women charting with Fertility Friend, we found that 94% of women who became pregnant had intercourse on at least one of these three days."