Clear liquid usually is just an indication of healing. Normally, infectious discharge is cloudy - may be yellowish or greenish - may also have an odor. If I remember correctly you see the doctor or a PA tomorrow for a recheck? They should be able to confirm whether you are okay, and explain exactly what to watch for going forward. Staph is in the air, on surfaces, etc. Be really careful to protect the opening when you are doing things, or out-and-about, to prevent reinfection. I have not had recent surgery, but I have very fragile skin, so I treat every cut and scrape on my hands and forearms carefully. And as ever diligent handwashing & keeping surfaces clean is a important.
Will you let us know what you learn tomorrow?
Sue