I'm sorry to hear you're experiencing difficulty speaking due to a throat infection along with a severe cold and dry cough. These symptoms can be quite uncomfortable.

Here are some steps you can take to find relief:

• Rest your voice as much as possible to allow your throat to heal.
• Stay hydrated by drinking warm fluids like herbal teas, warm water with honey and lemon, or clear soups. This soothes the throat and helps loosen mucus.
• Use a humidifier or inhale steam from hot water to keep your airways moist and reduce irritation.
• Avoid irritants such as smoke, strong perfumes, or cold air that can worsen your symptoms.
• Over-the-counter expectorants like Ascoril SF Expectorant (which contains guaiphenesin, terbutaline sulfate, and bromhexine hydrochloride) may help by thinning mucus and easing cough. However, this medication requires a doctor's prescription and should be taken under medical supervision.
• Avoid whispering or straining your voice, as this can further irritate your throat.

If your symptoms worsen, persist beyond a week, or you develop high fever, difficulty breathing, or severe pain, please consult an ear, nose, and throat (ENT) specialist promptly for a thorough evaluation and appropriate treatment.

Take care and get well soon!To narrow down potential causes, we will need some more information.I understand that you are having trouble speaking due to a throat infection, along with a severe cold and dry cough. While I cannot provide medical advice, can you please share your age and gender?