Question About Incision/infected??

I have a question about my incision. The one where my port is had a little "knot" like thing sticking out. I at first thought it was a scab, but then figured it was part of the stitch. I moved it around a little and its hanging on by a stitch still inside me. As I moved it, the area started getting moist. I squeeze a little around the area and some discolored, yellowish, clearish liquid form came out. Does this mean it could be infected? It does not hurt at all and I just seen my surgeon last Friday and he said they looked great. I have his number to call him tomorrow, but was wondering if anyone else had an issue like this. thanks for any and all help.......