When I had a partial obstruction, I also had nausea, some dry heaving and/or vomiting, and some burping. Didn't seem to be able to pass any gas. Also had abdominal pain.
Is your pain constant?
A BIG hand-clap for you. Glad to hear you're having some progress, and hope the Dulcolax helps even more!
For future reference, here are two articles with some GREAT information about the symptoms of intestinal obstruction.