Sometimes you can see that your level has gone up by, say 5%, but when you look at your actual levels on your history page it hasn't. It may even have gone down!
The most likely cause of this inconsistency is that someone may have updated the results (maybe there were corrections) since the nightly processing was run so now one or two of the results aren't consistent. Level history is re-calculated every night so just wait until the morning and it will all be sorted.