Feeling Discouraged about this month😢

So I took opks for the first time this month...I knew exactly when I ovulated I was so happy. We so happened to BD a day before I ovulated became we were in the mood lol. But DH feel sick like literally the next day I just hoping the one time during my fertile period is enough. I really wanted to make sure that we covered. I guess I just need so positive encouragement. I would also love to hear about anyone getting BFPs from one time in there fertile period...BABY DUST TO YOU ALL!!!!