@Eve7 It is so difficult when you descend into that darkness again after so long. I can relate as it was many, many years for me between my last period of major depression and the present one. I did not see it coming but I got really sick, was bed bound with illness for a few weeks then depression, anxiety and CPTSD hit full force. In retrospect it was coming before I got sick but tried to push through rather than dealing with it. You have the advantage now of seeing it coming and are seeking help - that is both both self awareness and self care.
As others have said - writing things doen is a great idea - I did that for both my GP and psychologist - mainly because I was so deep into that darkness that I could not talk. Take your time with your GP and let them know everything that is going on for you - it is so importsnt we are honest with our health professionals so we can get the righ support.
Lastly - welcome to the forum - I hope you find it the caring and supportive place that I do 