Thank you for your query.
I think you are messing around with your system , with your ' calculations "
Having sex around ovulation and then taking I pill
is funny and unwise.
As such, I pill will mess with your menstrual cycles.
And nobody can specifiy when they " have to be " or " want to be " pregnant, particularly at 37.
Also, taking withdrawal bleeding tablets in addition to I pill during one cycle is far from " cleaning your system " , it is only playing with it.
Please consult a proper doctor and plan your pregnancy
in a proper scientific manner without self medication
and popping unnecessary pills.