Update:!!! I thought I had bad news...?

Hi Ladies! Well I asked a question earlier about the ultrasound technician said I may not be ovulating.. Well I just got a positive OPK!!!! Soo I have another question. (I'm sorry I'm new to the OPKs) but my hubby is working over night and we BD'd yesterdy afternoon for just in case.. Is there a chance we may miss it? How long do we have? It's 12:00 am here and I'm not sure when he'll be home. Sometime in the morning supposed to be.. I'm scared we'll miss it! The test I used is the clearblue easy ovulation.. I know I sound ridiculous but I've been trying for almost a year I really want to get it right this time! Lol! Thanks so much in advance!