At 30 minutes after HSG , there was no significant difference in the median VAS pain scores between patients administered NSAIDs ( median , 2.3 cm ; range , 1.4-4 .2 ) or misoprostol ( median , 2.3 cm ; range , 1.2-4 .4 ) and the control group ( median , 2.2 cm ; range , 1.3-4 .4 ) .