positive opk - when to have sex?

[BeginnersLuck]

DTD yesterday early afternoon and now, about 24hrs, later I've got my first positive opk.
So, given that I'm not sure I could persuade DP to DTD today AND tomorrow , to maximise my chances of conception, would I be better off trying to seduce him tonight or tomorrow night, do you think?

I think do it tonight especially if it was a strong positive on the OPK. Not sure though as they say the positive OPK indicates you will be ovulating in something like 12 to 36 hours, and if this OPK is actually the lead up to your surge you might get an even stronger positive tomorrow. In any case doing it tonight is not going to do any harm and you have a good chance of catching ov. Tomorrow might be ok but risks being too late.