Hi there 🙂 well done for admitting you need help, it’s a big step. I don’t know where you are in the country but when I needed counselling I just googled nhs counselling in my area and self referred that way 🙂 that is what most GPs will tell you to do these days!
I am not an addict but my partner is so whilst I don’t personally understand it I’m living it from the other side so feel free to message whenever you need to. I would also urge your girlfriend to get on this site (or another) and reach out because chances are things will be very difficult for her! I have found this site to be a lifeline when I felt so alone with it all. There are other charities etc that will help her also if she needs it, her support will be important for you so it’s important she makes sure that she is supported too.
Chin up and keep doing what you’re doing – you’re doing really well. X