Tummy tuck incision leaking? Surgeon says not to worry but I am.

Hi and welcome to our forum!
While there may be areas of slight healing delay responsible for small amounts of drainage, wound leakage sufficient to saturate bandages, clothing, and bedsheets is excessive. The presence of a clear or serous (yellow tinged) fluid suggests a seroma, perhaps too small to be palpated. Often, an ultrasound study is required to locate these collections.
Maintain close followup with your plastic surgeon. 
Best wishes...