Thank you for asking Healthcare majic. My name is Dr Ehsan Ullah & I have gone through your query. During the wound healing process specially after grafts , there is Serous fluid discharge which which is usually which is pale or light yellow in colour. you need not to worry about this as it will gradually reduce . regular and timely wound dressings as advised by the treating physician are essential. but if it looks thick and has Pus appearance or it s greenish ( Which usually indicates Pseudomonas infection) then that need to seek immediate medical attention. Hope this may help you. Let me know if anything not clear. Thanks.