More than just morning sickness

So besides feeling sick the last week and half and thinking it was just morning sickness. I'm starting to think it's more than just that, the back of my neck and some parts of my back ache. I've been getting chills and shivers to the point where I can't tell if I'm getting fever or hypothermia. Every time I eat something I get excruciating abdominal pains that last for like two hours and sometimes accompanied with (feeling like I want to throw up) diarrhea. All I've been drinkin is water and I still feel dehydrated and fatigued. I've been so sick that I've been depending on my 5 year old to help me with my 21month old. I just told my husband that he needs to come home, but have any of you ladies felt this sick during pregnancy or do you think it's something more?