I hope you are under the treatment of a proper infertility
HUCOG is human chorionic gonadotropin
, which is given to rupture the mature follicle ( egg ) from the ovary
It should be given after proper serial follicular monitoring, when mature follicle is ready in the ovary.
Having intercourse as you mentioned around the days of ovulation definitely increases your chances of pregnancy
As you have exceeded normal length of your menstrual cycle, you COULD be pregnant.
If the home pregnancy test is negative, a blood HCG test can confirm it
But you should visit your treating specialist first, and then proceed ahead.
I hope you are not on Duphaston
or any progesterone
support, as it can delay your periods too.