My groin area is sore, swollen, lumpy. lost 30lbs in 4 mths. what could be wrong?

Doctor can evaluate: Losing 30 pounds in only 4 months is quite a significant weight loss that should be evaluated as soon as possible by a physician. It could mean an infection, cancer, or another serious condition. The weight loss may or may not be related to the symptoms in your groin area.

Very concerning.: Please go to see your doctor now to get further evaluation. You may have lymph nodes enlargement/mass in the groin that warrants biopsy and further test - scans etc. Significant weight loss, lumpy/swollen glands are very concerning as this could be cancerous. Off course other process like inflammation can also give you these problems. Whatever is please seek medical attention.