as freddy goes to hollywood said... Relax! ... but, don't do what the rest of the song says to do in your tent. autos can take 12 or more weeks in come cases and usually bigger plants+yields too. It's possible you have a longer/larger autoflower.
I don't see any bunches of stigmas at nodes forming (lol, been saying the wrong thing in tons of questions!). So, if you don't see those start to form soon, it may not be an auto? can happen from a substandard breeder and even a good one i bet. i don't know the failure rate.