Thank you for your query.
You are having unexplained infertility
HUCOG is HCG injection
, given to help the mature follicle to rupture.
That is, it induces ovulation.
Normally, it takes 36 hours after the injection for ovulation to occur.
And the next 3 days are ideally best for you to have intercourse.
since you had intercourse yesterday, your doctor might have advised to avoid it today and hence improve the sperm count
SOme practitioners believe in daily sexual activity during the fertile phase, and some believe in alternate sexual activity.
Normally ovulation occurs on the 14th day, so its considered the best day for intercourse, however if your doctor has given the shot today, you would ovulate tomorrow.
So please have faith and go ahead.