U R belly pain liver bw was normal slight elevation in wbc on Cbc everything else normal normal us of upper abdomen but head of pancreas not seen?

Common. Very common not to see pancreas on ultrasound. Abdominal pain has many causes, it may be worth rechecking that cbc and consider seeing a gastro MD. Common causes of abdominal pain in someone your age are gallstones, gastritis, IBS, constipation among others.