This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraceptives, Subject name: Gynaecology & Obstetrics
The most common side effect of IUCD inseion is: 
Select and explain. 
A. Bleeding., B. Pain., C. Pelvic infection., D. Ectopic pregnancy.
A: Bleeding.
Answer: A: Bleeding. 
Explanation: Side effects of IUCD Bleeding Most common side effect Tranexamic acid and NSAIDS and are given for the first 3 cycles during periods Best time of Inseion of IUCD within Last days of Periods Pain( Most common reason for removal) Infection PID's (Should be Ruled out before Inseing IUCD) Perforation(Rare)