Opk.. Now the question is.

I have been trying to conceive naturally for over 5 years and I am at the end of that path.. So this month I broke down and bought an opk. This is cd 9-11.. I seemed to me that I have a positive this am. Which I thought it would be another day or two before I ovulated.. My cycle is 27 days long. My question is now that I got a positive opk, when should I ovulate? I am reading its 12-36 hours.. Such a large window! So should I pull him into the bedroom now? It's been about 6 hours since I got the test done. We did the bd on cd 7-9.. So I wanted to give his swimmers some time to build up again lol.. But if we want this baby then when is a good time for us to bd again?