The singer - who is currently seven months pregnant - is in some pain as she has a nasty sore right on the end of her tongue.
She tweeted: "I have a spiky ulcer on the end of my tongue."
Her loyal followers then gave her lots of advice on how to get rid of the ulcer.
One user said: "gargle salt water, tastes like shit but it helps :-) x (sic)"
Another advised: "oooooh painful & irritating - mouthwash of warm salty water xxx (sic)"
And it seems the ulcer is not Lily`s only problem. She is not enjoying the current rainy British weather and has had to warm herself up with some hearty porridge.
She tweeted: "PORRIDGE DAY (summer is over) (sic)"
Last month, Lily said she felt like a penguin that "waddles".
The pop star woke up one morning feeling like the aquatic species of bird - which is known for only being able to move slowly on land - because of her ever-expanding baby bump, but her penguin dilemma led her to start thinking about the chocolate biscuit that shares its name with the animal.
She wrote on her twitter page: "I feel like a penguin, not the chocolate covered biscuity kind, but an actual penguin that waddles ... now can`t stop thinking about chocolatey penguins doh! (sic)."