The University of Missouri Research Reactor Center is the world's most powerful university research reactor. It is one of only six public universities in the United States with a school of medicine, veterinary medicine, engineering, agriculture, and law all on one campus.
Stomach Flu Symptoms: Cramps and Nausea. Stomach flu causes inflammation of the lining of the stomach, small intestine, and large intestine. Viral gastroenteritis is highly contagious and affects millions of people around the world every year with vomiting, watery diarrhea, headache, fever, chills, and abdominal pain and cramping.
Your uterus contracts, causing your stomach to harden. You'll feel the cramping come first and then slowly (if it is a real contraction not BH) your stomach will get hard and stay hard throughout the contraction (45-60) seconds or so. Source(s): Mother of 3 and 35 weeks with #4.