I've got phlegm in my chest, my head feels cold, and my energy is low. i sometimes have a sweat on my forehead but no fever and no dry cough and any other symptoms.

Symptoms concerning: Seek care right away if difficulty breathing, other severe symptoms. Seek testing if known Covid-19 contact, or travel to high risk country, or been in facility treating people with Covid-19. Call 0800 029 999 for test. Seek consultation, preferably by phone/online. HealthTap video consultations available (start over and click on Talk-to-Doctor).