Hi there, I have understood your concern and I will suggest you the best possible treatment options.
First of all do not panic.
From your description, it is clear that you have not formed the egg as yet.
Please follow up with USG for further development of the follicles.
Usually follicles rupture around 18 to 22 mm size.
Secondly, don't feel bad about previous sexual activity. At least have unprotected sex activity on alternate days now onwards.
Usually, Injection
HCG 5000 IU is given when follicle reaches 18 mm size and then it ruptures within 24 to 36 hours.
I usually advice sexual activity at least on alternate days from day 10 of the cycle.
Once follicle ruptures, you can opt for IUI -
Intrauterine insemination on the day of ovulation or opt for unprotected sex activity on and around the day of ovulation.
Please start on
Folic acid and vitamin B 12 supplements. This helps you to prevent various complications during conception,
pregnancy and childbirth.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar.