My cat (3) keeps coughing up her food as soon as she eats it, and has been bopping her head all day. Hairball?

Species: Cat

Age: 3

Sex/Neuter status: Female

Breed:

Body weight:

History:

Clinical signs: Coughing and retching - throwing up food as soon as she's eaten it. Fine otherwise.

Duration: Since this morning

Your general location: Shropshire/England