What does it mean when it hurts for a tampon to be in?

Tampons can hurt for numerous reasons, here are a few possible causes of pain...

1. You're using too high an absorbency for your flow.
2. You're sensitive or allergic to something in the tampon.
3. You're tense when attempting to insert the tampon.
4. You're inserting at the wrong angle or in a different position.
5. Your cervix is lower than before so you're hitting it with the tampon.
6. Your vagina is already damaged from using a tampon directly beforehand.
7. You have a vaginal infection such as a yeast infection.