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Thanks for your reply's folks.
She is in Hong Kong at the moment, due back next month, but she has had all the test possible privately in an American hospital.
She has not had morning sickness as such but feels nauseous, lost her appetite the past 4 weeks until a few days ago and maybe a bit stressed as she had a miscarriage last year when she was 2 months.
She is going to have a session of acupunture tomorrow, so will see how that goes.
Thanks once again everybody, I seem to be worrying more than she does, but I know how important it is for her for her first baby..