Drain Question

I have a drain in each side and I am hoping to have them out by the end of the week.

One drain, the one on my cancer side where I had the sentinel nodes removed (also the side where the drain insertion site leaks), is still putting out more than 20mL per day, while the drain on the other side is now putting out....almost nothing. About 12mL per day.

So the question is, is the cancer side putting out more fluid because the lymph nodes are gone or is the other side putting out hardly fluid due to a clot in the internal portion of the tube?