If it's gastritis (or an irritating of the stomach lining) or an ulcer, you'll most likely have a burning sensation in your upper abdomen that gets better or worse with eating. Take an OTC antacid such as Pepcid or Zantac, but if symptoms persist for more than a week, call your doctor.
The 2003 invasion of Iraq lasted from 20 March to 1 May 2003 and signalled the start of the Iraq War, which was dubbed Operation Iraqi Freedom by the United States (prior to 19 March, the mission in Iraq was called Operation Enduring Freedom, a carryover from the War in Afghanistan).
160,000 troops were sent by the Coalition into Iraq, during the initial invasion phase, which lasted from 19 March to 9 April 2003. About 130,000 were sent from the USA alone, with about 28,000 British soldiers, Australia (2,000), and Poland (194). 36 other countries were involved in its aftermath.