sex life

Leida • 21 in a relationship with my handsome police officer❤️️❤️️❤️️❤️️🚔
Ok this might be to much info but...... while having sex with your significant other (boyfriend) why is it when after the female has an orgasm it hurts when the male goes from behind..? 
Idk why I put it in second person perspective... but I really need help ladies!!!!