Your symptoms could be part of a depressive disorder, especially Bipolar Disorder
(BD). In BD, there are episodes of depressed mood and elevated mood, and there can also be periods of normalcy. But this is just a hypothesis from you description here. Please do not consider this as a diagnosis. You need to consult a mental health professional, preferable a psychiatrist
, for evaluation and management.
There is no doubt that you do need professional help at this point. Do not wait for things to improve on their own. Get help soon.
Abhijeet Deshmukh, MD