Thanks for the query.
Some women may have lengthier menstrual cycles, like with around 35 days length.
In that case sometimes ovulation can get delayed.
So you continue follicular study
and possibly in few days your follicle can reach sufficient size.
During the time of ovulation, you plan unprotected intercourse
which will increase the possibility of pregnancy
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429