What to do my lil girl. has pink eye 3 days it will be now don't know what to do answer me doc?

Take her to a doctor: If it really is pinkeye then she needs antibiotic drops or ointment. She'll need to see a doctor for that. In the meantime, wash the goop from her eye with a clean rag or washcloth whenever it is there. Use warm water as it is soothing. If it's not bacterial (you need to see a doc to find out), you can try using eyebright drops (an herb) or try cooled chamomile tea.