After stopping the Noristerat injection, it usually takes at least a few months for fertility to return and for a woman to be able to conceive. Noristerat provides contraception for about eight weeks, but its effects can take additional weeks to fully wear off. Typically, the earliest chance to conceive is about 8 to 12 weeks after the last injection, but for some women, it may take up to a year for fertility to return completely. Menstrual cycles might be irregular initially, making it harder to predict ovulation, but pregnancy is still possible during this time. If pregnancy does not occur within a year after stopping the injection, it is advisable to consult a medical provider for further evaluation.