Hallow Dear, I can appreciate your keenness in getting pregnant. If the egg is around 18 mm in diameter, you do stand a good chance in ovulating in next 24 hours. So utilize these days for sexual relations maximum. If this cycle it does not work, please follow my advice. From day 9 onwards, submit yourself for ultrasonography for ovulation monitoring till the evidence of ovulation is noted. In this monitoring, please note the following conditions: 1. Note the size of the follicle just before the ovulation. Follicles of diameter between 18 mm to 21 mm in size release the best quality eggs and have the best of the chances to get fertilized and complete a successful pregnancy. 2. Note the thickness of the endometrium (uterine lining). Endometrium of 9 mm to 14 mm thickness is most conducive for successful implantation of the fertilized egg (blastocyst). The life of an egg is 14 hours while the sperms are active for 72 hours. Keeping these facts in mind, you may plan your sexual relations. Around the day of ovulation, have intercourse at least alternate day. I hope this helps you. Dr. Nishikant Shrotri