You mentioned that you don't have a family gp or a trusted dr to go to? Thought I'd share that if you go to the beyond blue web site they have a list on there, I think under getting help who specialise or indicate an interest in mental health. This might help you find a dr that will be much more approachable and knowledgable about options and how to help.
In my experience it can be very upsetting to seek help from a dr that just doesn't get it.
Also it may be an option to get a referral to see a psychiatrist. They are the true specialists in anti depressants and if you are interested in non medication options there are psychs that specialise in therapy, not just all about prescribing drugs. I know because I've had a regular psychiatrist for years on and off when I've needed it. Has been invaluable as I've worked through depression, anxiety and binge eating disorder, and come out the other end