Sleep

So im gonna get straight .I used to sleep at 1 am till 9am , I fixed my sleep and iam sleeping at 9 pm and still waking up at 9 am no clock or alarm is waking me up and in case they do id be super exuashted that i dont remeber how did i go back to sleep . Just to mention that this has been a case for the past 5 days . Would it be fixed later by itself ?