Hello and welcome to HCM
Yellow discharge is little bit abnormal form a open wound. It may be early sign of infection. But you have no fever
, no rashes, no itching etc., chances of infection are less. Go and consult your doctor and get aseptic dressing done from him and rule out your query.
Precautions you have to take for caring wound are:
1. Clean the wound with aseptic solution.
2. Son't touch non sterile things on wound like hands, non sterile gloves etc.
3. Get regular aseptic dressing done as advised by your doctor.
4. Take the complete course of antibiotic.
5. Do not wet the dressing.
Hope you got your answer