hi, my wife is in the 9th week of pregnancy, she has nauseau and morning sickness, sometimes the vomitting continues the later part of the day and also in the night. at times when she vomits there are green colour shades in her vomit. 85% of the food she eats is thrown up by her for the past 4 days. Kindly advise us, it that anything to bother about, since this is her first pregnancy, am bit nervous of these symptoms.