My right ring finger is extremely painful, throbbing and increasingly red, swollen and numb and I cannot sleep. There s no open wound, but there could be an entry point for some bite where the nail meets skin. I was cutting limbs today but don t remember any bite. I also went swimming in a sea bay and perhaps got infected by oyster shells scraping across my finger. It started to come on hours later, after dinner. I iced it, put antibiotic cream on the area, without relief. Should I be concerned?