DH and I didn't get to baby dance cycle day 19!

because he works all day and then goes to school and my work called me and begged me to come work 6pm-6am. We usually BD at night and well when I'm at work we kinda can't. (I usually work days 6am-6pm)
I got my positive OPK cycle day 18 night and we did BD...
I'm just nervous because it's not like we can do it in the day cause he works. So I won't be able to BD till the night of cycle day 20.
I already feel out

or maybe Im overreacting cause it's 2:00 in the morning at the moment I'm tired at work and the hospital is so busy. Haha.