Thanks for your query.
Firstly, if your pregnancy
test was positive, taking Registrone is a contraindication.
i wonder if it was a gynecologist who prescribed it !
For a positive pregnancy test, if you wanted an abortion, you would have been, and should have been, directed for a medical abortion
with tablets or a surgical abortion.
Registrone contains norethisterone
which is harmful to the developing fetus.
There are possibilities of virilization
of a female fetus, as well as various other abnormalities in the developing fetus.
However you have taken the tablets only for 3 days, and you have not provided the details of the weeks of gestation so far.
Please consult a Genetic Counsellor for further evaluation.