no, unless you've saved but did you delete 'em? i've got messages on my phone that go back quite a ways.
I have had this happen recently as well. Very strange. A block of messages will just disappear. And I know I have not deleted them
Sorry to hear about the missing text messages, Tls3915. That is certainly odd and we are happy to help figure this out. How is your phone backed up exactly? For example, is it backed up to a cloud service such as Verizon Cloud or a computer? What's the make/model of your phone and what app are you using for texting?