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.
1 How long before i can eat normally after the stomach flu? Start slow: Stay hydrated at first with clear liquids for 18-24 hours, than slowly start to increase your diet with soft foods (brat diet), and then slowly increase your diet to more solid foods over the next 24-48 hours as tolerable. Best wishes.