Hematomas that spontaneously drain?
Your history is difficult to appreciate and to really provide you an opinion, an exam is needed. A 'pool of blood' means different things to different people and are you bleeding from the same spot or different ones? Regardless, if your surgeon is a board certified surgeon, you should be able to trust him or her to do the absolute best thing for you as we all universally share the desire to have the best outcome possible. What is your surgeon saying to you? And dark blood implies old blood so nothing acute is occurring.