Patient :There is very low chance of becoming pregnant while using Depo Provera when used properly. However, there is no 100% effective contraceptive methods. On top of that, it is very important to use a backup contraceptive method such as female or male condoms during the first week of Depo provera to avoid possible pregnancies while the medication starts working. Since you had sex the next day, I would suggest you to take a Home pregnancy test and if positive confirm it with a blood pregnancy test done by your health care provider.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.