Im interested in DST and need istance about Rush & the Requirements of Delta Sigma Theta Inc?

Ok, I am a junior in college and I have all the requirements I need except I have two issues! Thinking ahead, I know i need to have letters of recommendation and to attend DST programs to be a familiar face but when I finally decided to pledge this spring I realize that there are no more schedule events. Also, i don't know anyone in DST for a letter of recommendation. Moreover, the Rush is so discrete I don't know how to go about finding out about it, especially when I don't know anyone in DST except the ones who already graduated and that's NO help. IM PANICKING PLEASE HELP!!