Stabbing pain in groins that's not muscle related ?

Many Explanations: But in a nutshell you need an exam. There are many things that can result in a common symptom of groin pain. Inguinal or femoral hernia, kidney stones, referred pain from a hip or spine injury, inguinal lymph nodes, infection, especially if lmphnodes are enlarged, skin infection. A rare but serious issue is necrotizing fasciitis, but this is not typically subtle, with fever and malaise. See yourMD