How long to abstain before iui?

Jaimee
Tomorrow I have my appointment to check my follicles. I've been taking opks and no smiley at all. So I don't feel like I'm close at all. :/ but they're more than likely going to give me the trigger shot tomorrow. 
So I can only assume <a href="https://glowing.com/glow-fertility-program">iui</a> will be either Tuesday or Wednesday. 
Hubby has low count and low morphology. 
So should we not BD for the next few days?