Bding confusion

So I get my egg white cm but have a neg lh and then the next day I get the lh surge but am more dry down there, less cm. When is the best time to bd? When you have the eggwhite cm and no lh or once you have the lh?

Yesterday I had the egg white cm but my husband was so tired from work, he said he wasn’t in the mood... arghh and now I was right it was fertile cm. I got a big positive lh test today after I thought this month i wasn’t going to ovulate. So We are going to bd as soon as we get home from work today but I’m wondering if that is too late.