Thanks for your question and concern. Surgeries surely cause some changes in blood vessels. This changes can make them leaking to a bit. This means, fluids may escape through their walls. This is the reason of swelling and bleeding you may see after surgery. This is simply normal and nothing to worry about. The surgery might be successful. Still it may take up 6 to 8 weeks for a complete healing, depending upon the type of wounds. Good luck.