Instagram notification

So yesterday my sister used my iPhone and logged out my instagram and logged in hers. After she used my phone i logged out her instagram and logged in mine. Now the problems is even if its my account logged in the instgram app, i keep on getting her notifications but when i check up on the user account profile its my user account profile. WHY! And it's really annoying cause i keep on getting notifications about someone liking my sisters pics and me thinking that someone is liking my pic. It kills my ego bit by bit.

Its A Error With the App Try Signing Out And Than Back In Again See if that Clears Up The problem If Not Try Uninstalling than Reinstalling the App And See if the Corrects the Problem if it Does Not Please Contact Instagram and Report the Problem to Them