These are like inguinal hernias, but in a different part of the groin. Women are more likely to get them. They’re not common, but they can be dangerous -- you may not notice any symptoms unless a muscle squeezes the hole shut while the intestine is poking through (called strangulation). In that case, the lump will be hard and tender and you might have severe belly pain, nausea, or vomiting. If you have these symptoms, get medical help right away.