Had a bowl movement this morning, but still dont feel finished? is this constipation? can constipation cause appendicitis?

Appendicitis no: Constipation is usually not a cause of appendicitis.Sometimes the feeling on incomplete evacuation can be constipation,sometimes not.Usually constipation you have hard stools but not always.Just make sure have plenty of fiber in diet as well as plenty of water and keep activity level up as you will be fine.See a doctor for any concerns.