I have been vomiting profusely for about two weeks now. It is extremely difficult to keep anything down. For the last 4 days, I have had severe cramps in my stomach and gas that gets worse when I move or sit certain ways. Since last night, I have diarrhea and I think there is blood in it. I have not been constipated but that may just be because I don’t really have any food in my body. As of now, if I eat or drink ANYTHING, I get severe stomach cramps and vomiting or hiccups. I’m very uncomfortable. My doctor said that everything looks fine but I don’t feel fine. I feel very sick. Should I be concerned?