Your scan report is showing all the favourable findings for the conception.
The follicle of 18 mm to 21 mm size release healthy egg which has very good chances of fertilization. Your follicles seem to be within that range. Endometrial thickness of 9mm to 13 mm is very conducive for implantation
. You had 9 mm thick endometrium. And finally you had regular unprotected intercourses from day 9 to day 21 of your cycle. This includes the fertile period of the cycle.
Egg is released 14 days prior to the next expected menses. Egg lives for 24 hours while the sperms are active for 72 hours. Hence a period of about 8-10 days around ovulation is fertile period.
If with such favourable findings about the ovulation and endometrial thickness you are failing to conceive, you may please get yourself investigated for:
1. Patency of the tubes and the genital tact with its normalcy : This can be done by Laparoscopy
2. Semen examination for assessing the quantity and quality of sperms.
However, I would like to inform you that even in absolutely normal couple, 10% of the months do not conceive, there is 90% possibility of pregnancy
in normal couples.
I hope this helps you.
Dr. Nishikant Shrotri