I don't know how your counsellor will react, but I would try to trust him with that information. Most good counsellors will help you to work through why you believe you need the razor there and ways that you can begin to manage without it there.

The fact that you forgot it was there is a great start - it means that you don't need it You have already shown that. I know how hard it can be needing that comfort there but you don't need it