Question: how long should you wait after getting an iud?
Answer: You must wait 24 hours after the IUD is placed before you can use tampons or have sex. WHEN DOES THE PROGESTIN IUD START WORKING? The progestin IUD starts to work 7 days after it is inserted. For 7 days after your IUD is inserted, use condoms or continue your pills/patch/ring as back-up.