AM GETTING COMPLAINT? Complaint for those awaiting issue? (7,8)

I believe the answer is:

morning sickness

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'complaint for those awaiting issue?' is the definition.
I can't judge whether this definition defines the answer.

'am getting complaint?' is the wordplay.
'am' becomes 'morning' (I've seen this before).
'getting' says to put letters next to each other.
'complaint?' becomes 'sickness' (sickness is a kind of health problem).
'morning'+'sickness'='MORNING-SICKNESS'

Can you help me to learn more?

(Another definition for morning sickness that I've seen is " Expecting trouble".)

I've seen this clue in the Sydney Morning Herald.

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