Treatment After HSG Results

B • I am 33, DH is 32. After a long break, we are back trying for our rainbow baby http://bmariettc.tumblr.com/
Went in for my HSG (2x), and my right tube is blocked. I knew this from the first time, but the RE we had then, didn't go into details about a plan or treatment. Failed IUI is what it resulted in. My question is, what is the treatment afterwards? How do they open tubes if that's the next step? My follow up isn't until the 7th.