I have a really sore throats and there was a reasonable amount of blood in my phlegm this morning ?

Get checked : May just be a viral bronchitis that has caused some blood in the phlegm and neck glands to swell but important to have the chest and throat examined to exclude pneumonia and tonsillitis as possibilities. See doctor and urgently if breathing or swallowing troubles

Sore throats: May need antibiotics and a throats swab. Pl see GP for the same.