Upset - maybe missed window

Just got done with my second

IUI

on Sunday. My DH stresses himself out so much so that we can’t have sex (or he can’t finish) after. We tried last night and this morning....nothing. I don’t know what to do - the doctor says to have sex both the night of the procedure and the next day. but we can’t freaking do it and now I feel like we messed up the second

IUI

. He is now pissed and I’m afraid tonight will be too late, as I triggered Friday night.

Is tonight too late to have intercourse? Did we miss our window? Anyone else ever have similar situations?