Brachioplasty incision opening

I think my incision may have opened in my arm pit. I'm two weeks out. It's fairly small, not longer than half an inch and it's not very wide. Any suggestions until I can see my dr?

 I would take a picture and call. But my doctor says to clean openings with saline solution (you can buy the same stuff you use for contacts) then pack it with gauze that is wet down with saline. But again....Id send a picture to the dr.