I had a false bleed and went to take an injection ...

I do not use any contraceptives. NOW I decided to take it, my gynecologist had an injection, and she told me to take it on the first day of the month. I just had a false alarm and went to take an injection. And now, when my menses do come, I can take the injection again to validate its effect!
Expert answer:

You should never repeat the dose in this case, at risk with the large amount of hormones, you should wait for the date of the second dose and take it according to your doctor's prescription. Just follow the recipe that will work. You do not need to validate anything if you have taken the injection and it is already done, but you may have some menstrual irregularity because you did not take it on the right day.