It does sound like you are having symptoms related to depression. Depression can cause bouts of crying, sadness, hopelessness, and lack of motivation. This can be sporadic or can be consistent over time. Many times people with mild to moderate depression will not have depression every day. This does not mean that the remedy can be more regular than the disturbance of mood. When you have these symptoms sporadically over a period of time it would be helpful to seek treatment that is consistent so that the roller coaster ride you are describing does not happen. If you seek treatment during these cycles or between these cycles you can achieve a stability that benefits you. Any triggers such as stress can be very consistent with having this periodic depression. You would benefit from seeking a mental health evaluation irregardless of when you experience stress. Then you are prepared when stress does occur. Find a mental health professional in your area now and then you are prepared when the time comes.
Please press accept; this is the only way I am compensated