Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain dryness of mouth and bitter taste is a common finding in early stage of Pregnancy and it occurs as during pregnancy there is rise and fall in Estrogen levels and it is responsible for a foul taste and hormonal changes can also lead to dry mouth and both these conditions are temporary and resolve with the progression of time.. Nausea and vomiting can also be due to cumulative effect of foul taste in mouth as well as dry mouth.. You need not to worry as the foul taste and dry mouth will resolve gradually as the pregnancy progresses.. You can drink plenty of water.. Sucking mint candies can help in masking the bitter taste but should not be taken in excess.. Taking citrus juices like orange juice, lemon juice can help in increasing saliva flow and relieve dry mouth.. Maintain a good oral hygiene to prevent infections and gum diseases.. Take sufficient rest and maintain and eat nutritious food.. Hope this information helps.. Thanks and regards.. Dr.Honey Nandwani Arora..