Ovidrel before IUI

MamaBear813 • Married Dec 2014 • TTC #1 since Nov 2015 • 3 failed IUI's • IVF • FINALLY PREGNANT after IVF #1 🙏🏼🙌🏼👶🏻💙 • Baby boy born July ‘18 💙
I am talking my trigger shot, Ovidrel, tonight at 10pm. I am scheduled for my IUI on Wednesday at 2 PM. This is 40 hours after my trigger shot. My nurse today told us to BD tonight and to abstain tomorrow. I imagine it is safe but do any of you guys know if it's safe to use Preseed tonight?