Yes, but you are asked to abstain during certain times. If intercourse is planned after taking the medications, we ask you to abstain 48 hours (about 2 days) before your ultrasound or lab appointment. If we tell you to take an HCG injection that day, you will be instructed to have intercourse that night and every other night for one week. If an IUI is planned, you will be asked to abstain for 48 hours (about 2 days) before the procedure.