hi Angelface, how frustrating for you, but you never know. those wee suckers can live for up to a week inside, so you never know, and it might not be too late to sneak one in tonight.
i an due to OV today too and had to bribe DH to perform last night, i had to promise that this will be the last time for a few days, so if i don't ov today, then hopefully there is enough there already. never thought we'd have to beg for it!
with my last pregnancy we dtd 5 days before i ovulated and then my OH was away with work, i still got my BFP...although not a sticky one mmc at 8 weeks.
hopefully you get another chance tonight, if not, fingers crossed you've done enough. hope your LO feels better too.
T x