I Have A Gunshot Wound Passing Through Left Hand Joint

Question : I have a gunshot wound passing through left hand joint between thumb and hand on Tuesday 1-30-2019. exit in middle of hand. Hospital checked in evening. Ultrasound found nothing. Next day saw hand surgen. No need for surgery. Splint made. Hand never cleaned at hospital er, surgeon or splint. Constant burning pain (lasted several hours constant) in middle of hand exit wound stopped 6 hours ago, sharp throbbing pain in entry wound, which is symptom I am concerned about. Hand was resting on my belly in partially reclining position on overstuffed chair. Throbbing lasted 5 seconds. Can't see thumb wound because of splint. Can peek at center of hand wound. Looks like not red or swollen. First and only throbbing and pain at thumb joint entry wound from 38 calibre bullet. What Was I doing? Holding cat firmly behind head with gun 2inches above head. Instant before I shot, cat lurched and bullet went through hand. Was digging grave with shovel. Had just scooped dirt and grass without gloves before shot. Throbbing and pain at thumb joint now (dull but sharp and strong) but not at wound as before. This throbbing not at heartbeat. No red lines down arm or in fingers. Can not see arm for about ten inches above wrist due to splint. Told not to remove splint. Throbbing at thumb joint now every five seconds. My concern is throbbing at entry wound. Sharp and painful at 8 on 1-10 scale. That throbbing has stopped. Lasted about five seconds. I'm 65 and healthy and active. Weigh 200 lbs and 5'7" tall. Have sezures, took many years to get controlled for 5 years now. Deppression, took many years , normal for one year now. Lamictal. Trileptal. Onfi. Nortriptyline. Abilify. Vegan for one year Many years vegetarian. Take multivitamin multimineral. Vitamin D per doctor. B12. Can bend all fingers. Thumb immobilized by splint.