I'm 8 weeks pregnant and I feel so sick. I don't eat cause I constantly vomiting even when I drink water my excess of saliva is just awful .. I can't smell any food I can't even think of eating anything it's been 4 weeks now I bearly eat and I'm getting weak now I don't even take my vitamins cause they make me feel worst I don't know what to do has anyone experienced thos symptoms can someone please help me ?