I took a few pics with my Thunderbolt and saved them to the phone. Now I want to send them to people via text message but every time I attach the photos, add the recipients, and type a message it acts like it wants to send but doesn't. Instead of sending I"ll get an icon in the upper right corner of the message of which loks like a text message bubble with a clock in it. What does this icon mean? Does it mean the message was sent?