Re: Sinus polyps sorted.
Sico - I'm not sure what you experienced but Sweetpotato13 is correct that you cannot blow out polyps. Polyps are fluid-filled sacs of mucus membrane tissue that are attached to the lining of your sinus and would cause a significant amount of bleeding and pain if you were to blow one out without cauterizing the wound. Even then, you would simply rupture the polyp and the liquid and blood would drain out.
It sounds like you had mucus trapped in your sinuses that you were able to remove by blowing your nose but I'd hate for people to get the impression that they can forcibly remove polyps if they blow their nose hard enough - it's just not possible (and would be unsafe and very painful to try).