Hi i has severe morning sickness since week5, and by week6 i had whole day vomiting and also vomit yellow stuff from the tummy first thing in the morning as theres no food in there. Before u wake u can chew on plain crackers so that when u vomit, it will not be hard on ur stomach. This is what im still going through now. Im currently at week 14. Although im on the smallest dosage of the anti vomit pills from gynae, it doesnt work all the time. But the pills still hv to take it or else i will be a merlion the whole day. U can ask ur gynae for the pills