It is likely your teeth causing this.

You need to see a dentist who will fix your teeth and also advise you as they are trained to spot oral cancers.

If you can't get an NHS dentist and you have little money private dentists will sometimes allow you to pay by installments.

If you are in a really bad state a hospital dentist may see you, it is then free of charge.

Hello,

It sounds like you would benefit from seeing a dentist who is the best person to advise you about this, as they are trained to assess mouth issues.

You can search on the NHS website for find a dentist

and when in need out of hours dentist access

Ring NHS 111 for medical advice on dentists locally as well.

Hope this helps, 

Best wishes,

Vanda