Does the soul come out of the body during sleep?

There is clear
evidence in the Qur’an and Sunnah which indicates that the soul is taken
when one falls asleep, and that sleep is a kind of death. This evidence
includes the following: 

1.

Allah, may He be
glorified and exalted, says (interpretation of the meaning):

“It
is Allah Who takes away the souls at the time of their death, and those that
die not during their sleep. He keeps those (souls) for which He has ordained
death and sends the rest for a term appointed. Verily, in this are signs for
a people who think deeply”

[az-Zumar
39:42]. 

2.

And He, may He be
glorified, says (interpretation of the meaning):

“It is He, Who
takes your souls by night (when you are asleep), and has knowledge of all
that you have done by day”

[al-An‘aam
6:60]. 

3.

It was narrated
from Abu Qataadah (may Allah be pleased with him) that when they slept and
missed the prayer, the Prophet (blessings and peace of Allah be upon him)
said: “Verily Allah took your souls when He willed, and He returned them
when He willed.”

Narrated by
al-Bukhaari, 7474 

4.

It was narrated
that Abu Juhayfah (may Allah be pleased with him) said: The Messenger of
Allah (blessings and peace of Allah be upon him) was on a journey during
which they slept until the sun rose. He said: “Verily you were dead and
Allah returned your souls to you; whoever sleeps and misses a prayer, let
him offer it when he wakes up, and whoever forgets a prayer, let him offer
it when he remembers.”

Narrated by Abu
Ya‘la in al-Musnad, 2/192; classed as saheeh by al-Albaani in
Irwa’ al-Ghaleel, 1/293 

5.

It was narrated
from Hudhayfah (may Allah be pleased with him) that when the Prophet
(blessings and peace of Allah be upon him) woke up, he would say: “Al-hamdu
Lillahi alladhi ahyaana ba‘da ma amaatanaa wa ilayhi an-nushoor (Praise
be to Allah Who has given us life after He caused us to die, and to Him will
be the resurrection).”

Narrated by
al-Bukhaari, 6312. It was also narrated by Muslim in his Saheeh,
2711, from al-Bara’ (may Allah be pleased with him). 

This evidence was
quoted by al-Haafiz Ibn Rajab (may Allah have mercy on him), who then said: 

The verse
indicates that sleep is a death, and the hadeeth indicates when a person
sleeps his soul is taken. They both indicate that the soul that is taken in
death is the soul that is taken during sleep.

End quote from
Fath al-Baari by Ibn Rajab, 3/325 

But the taking of
the soul in sleep does not necessarily mean that it is completely separated
from the body, as happens in death; rather the fact that the life remains in
the body during sleep indicates that the soul is still connected to the body
during sleep, but the connection is less than the connection when it is
awake. Not every departure of the soul from the body implies death; rather
what happens to the body differs according to the type of separation. 

Ibn Rajab (may
Allah have mercy on him) said: 

The taking of the
soul from the body does not necessarily mean that it has departed from the
body altogether; rather it may be taken whilst some kind of connection is
still present, as in the case of one who is sleeping.

End quote from
Fath al-Baari, by Ibn Rajab, 3/326 

For other
scholarly opinions on this issue, please see al-Jaami‘ li Ahkaam
al-Qur’an, by al-Qurtubi, 15/261; Fath al-Baari by Ibn Hajar,
11/114 

However what
appears to us to be the case is that what you mentioned in your question
does not have anything to do with this issue at all; the departure of the
soul during sleep only happens when one is actually sleeping, and it does
not happen before sleeping as you mention. 

Perhaps what is
happening to you is a psychological matter or excessive preoccupation with
death and the like. 

We ask Allah to
keep you safe and sound and to put your affairs straight. 

And Allah knows
best.