How to add field in field I have a content type with text field (unlimited). Text field is limited to 250 chars and will be used to put names inside
User can choose as many fields as they want depending on how many names they have for this node.

What i would like to do is to let users upload image next to text field.. if they chose 15 text fields, then they can also upload 15 images, but each image connected to its text field.
I think you're looking for the Double field module.


  Double field is a small module written to provide extensions to Drupal's core Fields. By this module you can divide your fields into two seporate parts. For the moment it includes the following sub-widget types:
  
  
  Textfield
  Select list
  Single checkbox
  Textarea Consequently, in all there are 4 x 4 = 16 widget types.
  


Currently it is not supporting file upload. However, you can make this as support request in that module's issue queue.