My TB (tuberculosis) test is positive, but I don't feel any symptoms. Why?

Classic. You inhaled it but has not caused disease yet. Protect yourself and check with your doc.
Chest X ray. It is possible to have active TB with very little symptoms especially early on. However, it is more than likely that you carry the germ for TB in a dormant form, this is called latent tb. No symptoms are expected with latent tb.