We had a presentation from a company who does D&A testing and he's a former UK Policeman. Quite an interesting chap and presentation.
CBD will trigger a "non negative" result with the initial testing done on site. The more detailed lab test will show it's CBD but by then you'll be off the flight and all that entails.
While you'll be cleared of drug use etc, the rumour mill will be in overdrive as to why you were taken off a flight etc.
Some research is coming out about the benefits of rhythmic non competitive exercise in the easing of depressive symptoms. By rhythmic I am talking about walking, running, swimming, cycling etc.
Has this been suggested to you?
Good luck.