hi there ,
thanks for writing to us,
Injectable exogenous Gonadotropins directly increase the amount of FSH circulating in the body, promoting the growth and development of a mature egg.
The doctor will most likely monitor your progress through ultrasound
and blood tests if he/she finds to have an adequate stimulus,they stop it as over stimulation will lead on to negative feedback.
As you already ovulated on expected date, your doctor wont let you for another injection.
Hope helped you,
Let me know if you have any questions