Problem
You were are 1150 distinct drinks, and now it shows 1120. What happened?
Solution
In order to keep our system accurate, duplicate drink are regularly merged. If your unique count has decreased, it's possible that you had checked into the same drinks that were merged together. You can view your merged beers here: https://untappd.com/account/merges, or in-app by going to [Profile > Uniques > ⋮ > Recent Drink Merges].