Sending Multi media message problems

[Melaney Barter]

I have a Galaxy s 2 phone and every time I want to send a photo the dam phone gives me the following message when I try to send it. "Unable to send message too many unsent multi media messages"
What is wrong and how can i fix it

 

[VDub2174]

Welcome to AC!!

Do you have a bunch of unsent MMS?