Feeling irritation in the throat. It?

Feeling like something is blocking in the throat and when I try to remove it with a cough and spit it out it looks like sputum and along with sputum sometimes a little red colour/blood come out and after taking it out throat feels like burning and after sometime and after drinking water it becomes normal. Though I try to control it without spitting feel like throat burn and can't speak normally as something is in throat. Picture attached for your reference please check. Afraid of what is this and why this is happening and this happens in irregular times and irregular days mostly 4 to 5days per week since an year. Please suggest what is this and why i am getting this and how to stop it? Thanking you in advance for your time and response