welcome to HealthcareMagic
The whole thing which happened revolves around typhoid
which i guess is ok now as you don't have symptoms.Regarding the X-ray if it shows a doubt of TB you can get a ESR
;or best confirmation is immunology get a serum IgG
& IgM done it will give the diagnosis .If TB is confirmed you need to take medicines for the next 6-9 months as per your doctors advice.