My daughter had a swollen node behind each ear after wearing a cheaper pair of earrings. This was her first pair of earrings after getting her ears pierced. We had them lanced, the fluid was tested for infection, and it came back negative. We waited a while, and she got them repierced about 7 weeks ago. She is starting to get the swollen nodes again. Is this an allergice reaction? Should I take out the earrings altogether, or should I replace them with 14K gold? Thanks for your help.