Folinal is folic acid tablet
which is a vitamin essential to be used in pregnancy
Your doctor has prescribed you this because it is beneficial if you start this early in pregnancy or even before.
It will not induce your menses or make you conceive.
It is just a vitamin which helps in proper development of the baby and also for your requirements.
The doctor has asked you to review after 2 weeks just to confirm pregnancy if you do not menstruate.
This is because sometimes pregnancy test come positive late so just to rule out the possibility of missing a pregnancy.
There is no harm if you take this tablet whether you are pregnant or you are not.
There is also no harm from these tablets on your menses.