Yes. You can get internal bleeding from a gunshot.
Depending on where the person was shot the person can easily get and have internal bleeding and not know about the internal bleeding.
So if a person gets shot especially anywhere else besides the leg or arm the person always needs to go to the hospital.
Internal bleeding can quickly kill a person because without going to the hospital you cannot know you're suffering from internal bleeding.
All gunshots should be taken seriously and always visit the hospital to be safe.