Shipping at Shutterfly- Question

I submitted my Shutterfly Photo Book order on June 29th. I requested the books be shipped to Nova Scotia, since I was planning to be there until the 25th. Shutterfly indicated that my order should arrive between July 7th to July 17th. I ordered 6 photo books, and about 4 or 5 days ago I received one package of 4 books. I am assuming another package of 2 should be arriving separately. Am I assuming correctly? I am concerned that they have not yet arrived, since I received the others that long ago.

Thank you for taking the time to answer my question. I am grateful for your consideration. By the way, my books are beautiful....thanks to you.

Sincerely,
Loretta