Tuberculin positive

I tested positive on tuberculin skin test at 12 mm.I am from country with high TB rate and was a hospital worker there.The OHN was very nice and said that this does not effect employment and will arrange an xray.they then saw that I had a 3 month old contrast CT chest which was normal and they said they might not need xray but there will be referral to TB clinic and IGRA..has someone been thru this.. what lies next..i don't have any symptoms..

this is a very important job for me so bit anxious.

thank you