Ok, right, I am with you now
The best way to ask your doctor for help, is to be honest. The easiest way to do that is to write down everything, in bullet point form, ie how you feel, what you do/have done, who you see, what you want from the appointment, etc and literally just hand over the list to your doctor.
He will be able to read it through, and because you have had chance to prepare it before hand, it will cover everything you want to say and get across to him.
You could also print out the post you just wrote (the one that I am responding to) and show him that, but you will also need to explain how you are feeling at the moment.
It's really good that you are having therapy, and also that you never intend to OD again, you sound like you are getting yourself on the road to being better, which is brilliant.
The best way to ask, is to be honest.
Does that help at all?
Take care