Textures not showing in packed file from blender?

So, I have a blender thingy that I made. I also used textures for them, and I use the auto pack into file setting thinking that the texture would be packed into it. I transfer it to unity and "no mas". It's not there, done some searching but really dont understand any of it. Do I have to save a baked texture as an external file? I thought packing it fixed it. PLEASE HELP!!!! Thanks alot!!!!