I'm really concerned because I've been having this stuffed-up noise and chest congestion. There's even some pain in my chest, so I went ahead and got an x-ray. It shows mild prominence bronchovascular markings. Could this be a sign of TB? I'm worried because I need to have a medical test for my visa, and they specifically look for TB. Can you help me understand if these symptoms point to TB or something else?

its not a confirmation sign for Tuberculosis. You can go for Tuberculosis testing