Hello dear,i understand your concern.In my opinion the morning sickness is a routine symptom of pregnancy.Usually it disappears by 12 weeks but in a few woman it might be there till 16-20 weeks.But as it can be controlled by medicines nothing to worry.The medicines used for sickness vary depending on the severity.They are doxylamine,metochlorpromide,ondansetron etc.So depending on your condition one of these is prescribed.Take adequate fluids to prevent dehydration.avoid spicy and oily diet.Take food in small quantities every 2 hourly.Coming to itching it might be a non specific symptom.It might be due to allergy.So better to take dermatologidt opinion.Antihistamines like cetrizene might decrease itching. Best regards...Dr.Srilatha