My LO’s ear piercing

She’s had it about two months and I tried to switch her earrings out and one of them had green puss when I tried to pull it out. I’ve always cleaned them three times a day. How could they have gotten infected? Do I need to take her to her doctor? Could she lose her hearing from it? Should I take them out and keep cleaning the ear? We don’t have insurance right now and can’t afford a ER visit.