I'm 7weeks pregnant,very weak,can't keep anything down not even water, very shaky,and my heartbeat has been very fast ,can't do anything but lay down.

See your doctor: Medications are available but if dehydrated may need to go to hospital for treatment

See your doctor: The nausea and vomiting of early pregnancy can cause dehydration and electrolyte problems which can be serious. As severe as yours sound, you need to get in touch with your doctor. You may need IV fluids and prescription meds. In milder cases frequent small meals, the avoidance of spicey foods and foods with strong smells, ginger, dry crackers, and accupressure bands can help.

Go to the ER: You can get seriously dehydrated from vomiting. Please call 911 they can begin treatment immediately as they transport you to the hospital.

Probably dehydrated: Your weakness, shakiness, and rapid heart beat may be the result of being dehydrated. You may actually need some IV fluid - see your doctor! When things settle down, you may find that frequent tiny sips (teaspoons) of liquid will stay down better. Try sips of broth, "jello water," ginger tea - anything with a little sugar or salt will help you feel better.

Go to E.R. ASAP.: Please get to either ER or Urgent Care right away. It seems that you are getting dehydrated and need immediate attention to treat dehydration and also to help with your other symptoms of nausea and vomiting.

Dehydrated: you are probably dehydrated. You should seek help immediately.