Thank you all for taking the time to reply x
I've been to both DART (who told me I don't have a problem :-/) and Addaction where the young girl I saw told me more about her woes than anything else.
I am going to see my GP later today (will rung as soon as lines open) and hope my appointment isn't with the chap I know who runs the youth group my son goes to. But even if it is, I know I need help so have to go and 'fess up.
I've realised I'm a total 'duck'. To outsiders everything's fine (house, job, car, son, dog - NOT in order of importance!) but inside/under water I'm paddling like crazy to keep afloat but I'm getting so tired now I'm beginning to drown!
Thank you all again x