Do not. Vomiting does not cut the effect of injectable contraceptive.
The woman who vomiting after injection contraceptive nno need to take a new injection.
The injectable contraceptive is applied to the muscle and, after absorption, will be made available systematically in the bloodstream. Therefore, vomiting will not influence the absorption of this medication.
If it is the day you take your contraceptive injection and you are experiencing episodes of vomiting, you can apply the injection normally, but you should seek the health service to assess the source of the vomiting and appropriate treatment.
Take the monthly or quarterly injection on time to avoid contraceptive failures.