My fecal lactoferrin level was high at 22, negative for infections, other than norovirus. i thought only bacteria increased fl. could it be start ibd?

Possibly: I have no experience with the use of Lactoferrin and I do not know what kind of symptoms you are experiencing. There is a post infectious irritable bowel described over the last few years. In my opinion best will be for you to initiate a log with food and drinks that you have and the type of symptoms- say bloating, diarrhea, etc. Once you have couple of weeks see your gastroenterologist.