Of course, I am not a doctor, but I had been followed every 3 months and had no symptoms other than Pancreatitis a year prior and a resident visiting my Primary doctor wanted to check my Lipase which increases with pancreatitis. It was some higher than it was when I left the hospital. they referred me Duke GI who did an upper endoscopy...clear. Then MRI or CTs every quarter. Clean until September 2020 when my GI doctor just thought something was blocking my bile duct and decided to do another Upper Endoscopy the nest quarter. They did a CA19-9 and it came back at 100 (norm is 0-40). I wish I had pushed them to do it ASAP. It would have had me in treatment 3 months earlier and surgery earlier and it could have made all the difference in one node of 20 being positive even though no evidence of involvement outside of head of pancreas. So if you ask me and since you are worried, I would ask them to do it earlier...say around June/July. Talk to a GI specialist for opinion. You be your own advocate.