Firefox profile

earlier today i tried opening firefox but it brought up a profile box and said it was in use and i had to create a new profile to run it. i created a new one(without thinking first:thumb:) and after it loaded i opened the task manager and found two firefox.exe running. i closed the one that i wasn’t currently using and everything was fine, until i noticed that all my bookmarks were gone, so i figured they were under the other profile but i cant find out how to change to it. can someone please help?