When your airways are raw and irritated after a cold, it's easier for bacteria to invade. Bacteria can cause sinus infections, bronchitis, and pneumonia. If you have a fever or pain along with your lingering cough, a bacterial infection could be the reason. See your doctor, as you may need to take an antibiotic.
Any new legal document with the potential to have a substantial impact on your finances, time or responsibilities should be reviewed. Any time you make changes to a legal document or your situation changes, a legal document review is a good idea to ensure your interests are protected.
A deed poll is a legal contract involving only one party. Changes of name by deed poll were (and are) made before a solicitor who issues the document to the person changing their name. The solicitor may keep a copy on file, but it is unlikely to be a certified copy, and the file is unlikely to be kept for more than five years.