Call Southwest and ask them to add it for you. Generally, DIY adding of a TT number to your RR account after-the-fact will *not* add the TT number to existing reservations (and consequently you won't get TSA PRE on existing reservations).
While you had stomach flu symptoms, your doctor most likely prescribed a diet that consisted of bland foods and increased liquids. The BRAT diet is a common acronym used to treat an upset stomach and the stomach flu, according to FamilyDoctor.org. BRAT stands for bananas, rice, applesauce and toast.
4. Ginger like Stomach. If you think that ginger was only made to accompany your favorite salmon sushi, you are very mistaken! Ginger root, which resembles the human stomach, contains gingerols and shogaols, which have been shown to help treat upset stomachs, ease motion sickness, and relieve nausea and stomach flu.