How can I adjust my code to allow it to loop back with multiple conditions?

I've looked over tutorials but don't particularly understand the concept.

I'm trying to get my while loop work with multiple conditions/if statements:

while True:
    user_input = raw_input('\n: ').upper()
    if user_input == 'NORMAL':
        user_input = 'Normal'
    if re.match('(ABC|Normal|XY)', user_input):
        check_input = cleaned_dict.get(user_input)
    if not check_input:
        print 'Nope'
    if check_input:
        print 'Yep...'
        etc...
        break

However, I receive an error:

UnboundLocalError: local variable 'check_input' referenced before assignment

...Due to it not looping when the regex pattern does not match.

With only 1 condition it works perfectly.

Thanks in advance.