Form what you're saying, work may not be the cause of your issues, but they are making it more stressful. Depression and fluctuating hormones can both cause forgetfulness.
I really feel for you with all these decisions to make. Maybe your GP can help you decide the priorities? How well does she know you.
I know in uk, mental health makes up a large proportion of GP workload and mine seems to be quite experienced. What they can be good at is looking at the overall picture and help you see what might be your health priority.

Best of luck, whatever you decide, I hope you can get the help you need most.