<s>[INST] for the last few weeks, I have been having major sinus problems- headaches, pressure, and the right side of my nose would not get un-stuffed. and it hurt when i would try and blow my nose or sniff too hard. well the other morning, i I sniffed in really hard and this little dark blob comes out of it. Maybe about equal in mass to two airsoft BBs. At first I think its just some dry snot, it looks the same color. But then I touch it, and start rolling it around, and I realize its not dried snot. But its actually a little sealed sack. And its actually kinda tough, like it has some structure to it. So then I squish it between two fingers, and it squirts out a liquid. But then I look closer, and the skin of the little sack is actual skin. It has little veins in it. Like my sinus grew a little puss filled sack inside of it out of its own skin. and ever since it came out, i feel fine. no more sinus pressure or stuffy nose.....??????? [/INST] Hi. Welcome to Chat Doctor. I have gone through your query and can understand your concerns. As per your complaint there is a possibility that the dark blob that came out of the nose can be either a blood clot or a mucous plug that was obstructing the nasal passage and as it is released out there is opening of the passage and there is ease in breathing as well as reduced pressure. It can also be a sinus or nasal polyp that has got detached and has led to relief. As the cause might have resolved the symptoms has ultimately improved. I would still suggest you to do steam inhalations and also saline nasal irrigation for relief. In case if similar symptoms recur in future consult an Otolaryngologies and get evaluated and a clinical evaluation and MRI or PNS view of sinuses can help in diagnosis and treatment can be done accordingly. Hope this information helps. Thanks and regards. Chat Doctor.  </s>