Hello There!
If you have a history of depression in the past, the likelihood of relapse is a little high if the treatment didn't continue for the required period of time.
Also, along with medications, psychotherapy plays a pivotal role in dealing with the thoughts that can lead to emotional breakdowns.
Often people report going blank for sometime, this is likely to happen after a chronic period of stress or emotional disturbances as it's more mentally and physically exhaustive.
Health Tips
If it's difficult for you to identify what could have led to this then you can probably consult a psychologist to understand the nature of your problem.
Adherence to the intervention and compliance to the treatment for prescribed period will be essential in preventing further such phases.
To get an online consultation you can reach out to any Psychologist or me on the following link.
www.reflectwithin.in