SQL & PL/SQL

Hi,
I am working on oracle 11g. I need help to get the whole string before the word Contact1: . Please see some examples below.

 
SELECT REGEXP_SUBSTR('Day: 
Work: 

Contact1: 
Contact2: 
Contact3:','^[^\WContact1:\W]+') 
FROM dual; 

When i look at the number on new lines in the above string i am getting the value as 5. And when i am trying to pull the 3rd word before the new line I am geting it as Contact1: instead of null.

 
SELECT REGEXP_COUNT('Day: 
Work: 

Contact1: 
Contact2: 
Contact3:',CHR(10)) 
FROM dual; 

output: 5 

SELECT REGEXP_COUNT('Day: 
Work: 
xyzadbc 
Contact1: 
Contact2: 
Contact3:',CHR(10)) 
FROM dual; 

output: 5 

SELECT REGEXP_SUBSTR('Day: 
Work: 
xyzadbc 
Contact1: 
Contact2: 
Contact3:','[^'||CHR(10)||']+',1,3) 
FROM dual; 

output: xyzadbc   

SELECT REGEXP_SUBSTR('Day: 
Work: 

Contact1: 
Contact2: 
Contact3:','[^'||CHR(10)||']+',1,3) 
FROM dual; 

output: Contact1:  (how can i get a null for this) 

Appreciate your help.

Jacky