<prompt> The most common side effect of IUCD inseion is:Bleeding.Pain.Pelvic infection.Ectopic pregnancy.  <response>: 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 PIDs Should be Ruled out before Inseing IUCD PerforationRare 