Hi. Thanks for your query. Noted the history and understood your concerns. The commonest causes of lymph node enlargement of recent origin in inguinal that is groin area are as follows: Skin infection in the groin area which can be trivial but still the bacteria travel to the lymph nodes to cause enlargement and further problems. Hence the best way to get a diagnosis is: Clinical evaluation by a General Surgeon, helps to rule out inguinal hernia or any other problems like cyst or a lipoma. Would advise you for Ultrasonography and FNAC of the area to see and confirm. Give you a proper course of an antibiotic, anti-inflammatory medications. Further management as per the reports.