Can you describe this bump in more detail? Did you feel where the clicking noise come from?? Was there pain with the sneeze? I cannot tell if you are bleeding from the white bump or from your throat or what? It is hard to say what it is without looking at it but it does sound like something that needs to be seen by a doctor as soon as possible. It is strange to have no bump in your throat to a sneeze that produces it accompanied with bleeding. Try gargling with salt water for now until you can be seen by your primary physician.
Hello.
You can be pretty much calm because those white bumps are not that dangerous usually. Anyway, a feeling bump in throat can be really irritating. In any case, I would suggest you visit your doctor to determine what exactly this is.
Those white bumps are caused by the infection but you can deal with them pretty easy. It could be because of bacteria, fungi or some viruses.
Sure, some other viral infections can happen and that is why everyone should visit the doctor. Don't try to do anything alone, don't even try to pop them (I know that it is hard, but trust me, people are doing so many stupid things).