“What are the best treatments for depression?”

If it is situational, you do not need treatment. If it is continuous and prolonged, see a psychiatrist.

Depression is nasty illness and often it does become a struggle as you describe. However, there are many evidence based options available on multiple dimensions to treat depression, including antidepressant medications and Cognitive behavioural therapy. please consult your doctor sooner than later to discuss all the treatment options to make an informed decision and dont let yourself struggle anymore by deciding to start treatment as early as possible. this illness is quite prevalent in women of child bearing age.

A good beginning is:
https://www.healthline.com/health/depression/help-for-depression

Another insightful source is:
https://www.mayoclinic.org/diseases-conditions/depression/diagnosis-treatment/drc-20356013