I have a huge sneezing problem due to polyp and it's a allergic sneezing problem persisting since my childhood. Usually it happens during weather change and mostly I am allergic to dust, heat, powder, sharp smell like of a perfume etc. For last 2 times when I sneeze I have seen blood coming from my nose and throat . It's not much but I saw once it was little more than expected. Fearing it's nothing big just a clot or sore throat causing blood. Please do advise .