hi, thank you for your query. Chronic pain is the most frequent long-term complication of treating inguinal hernia. Onset of post-hernia repair pain usually occurs immediately after surgery. There are two predominant types of post-hernia repair pain: nociceptive pain, due predominantly to inflammation, and neuropathic pain, due to nerve injury. The most common type of postoperative pain is nociceptive which occurs due to tissue damage or mesh placement. the most common treatment for alleviating such pain is the groin block. Based on pain distribution, the patient is given ultrasonography-guided local anesthetic (lidocaine) injections in the ilioinguinal nerve and lateral femoral cutaneous nerves. there is considerable pain reduction and mobility is also increased. the swelling in your groin maybe a seroma or collection of fluid in the groin region.if you have additional pain and fever then it can be an abscess. i would advise you to get the groin block and then get an aspiration of the fluid done to get a clear picture about the swelling.depending upon that we can start anti-biotics and other tablets. thank you wishing yu good health