Comment by dillydogg
I thought about defining it up front but decided to move it to the second paragraph.
I would say it's worth talking to a doctor about how you feel. There are many things that can help. If you are in the USA, if is likely that they will use the PHQ-9 form, so consider looking at that questionaire to see how it aligns with your mood. medcalc is a common site that many of the residents at my institution use for these questionaires and other various scoring systems.