Feeling down for 4-7 days every few months

[eita363]

Greetings,
A brief background on me, working full time, engineering degree student, with a partner of 3 years, practicing a completely normal lifestyle without the feelings of depression/low mood. usually with a good feeling.
For 7 years (from my mid-teens) every few months I have a situation where I sink into my own bubble, a kind of "down" for exactly one week.

Before entering "Down" I have a desire for sweets, when entering Down I feel weakness, fatigue, fogginess following the weakness, fatigue and fogginess creates a feeling of not being connected to reality.
During the down feeling I have a heavy feeling of weakness with the will and ability to sleep over 14 hours for a few days. and a desire for sweetness.
During the down feeling, I feel disconnected from reality - that is, new things that happen to me at that moment will feel unreal to me and that maybe I'm hallucinating (for example, when I'm feeling down, the parking lot of my house is suddenly being renovated, which hasn't happened in 20 years, it makes me think that maybe it's not really happening ). Over the years I've learned that everything happens, and due to the feeling of not being connected to reality on those days when I'm feeling down, I try not to leave my bed/place of comfort.
In addition, the feeling of not being connected to reality is reflected that maybe I don't see 100 percent good in the same situation due to a feeling of fogginess.
Another symptom that happens that week is multiple dreams with a feeling of being real - which usually doesn't happen.
I have been to psychologists, psychiatrists, neurologists, urologists, 2 family doctors and they all ruled out everything and no one was able to give me a diagnosis of what I have.
Would appreciate help.

[specialmom]

You know what comes to mind? Burn out. That you go, stay in your life doing your best, maybe at times not fully yourself but working hard to be in the mix of things, etc. And then burn out starts. It CAN feel like depression and exactly like you describe. Are you neurodivergent at all? My son is and he's found that he builds in these down times. He doesn't fret over it and knows that IF he gives himself that isolation time, down time with no pressure that he refreshes. He built it in more frequently then every few months and does it proactively. Anyway, it sounds like it serves you to help you get back to yourself. Neurodivergent is pretty broad. It covers add/adhd, sensory integration disorder, autism (and autism can be so subtle some may never know they have it for real or are diagnosed). People can get burned out without neurodivergence as well. This link is really basic. But I can tell you the head fogginess, need to just be, etc. has really described my son as well. https://health.clevelandclinic.org/signs-of-burnout/  I think factoring it in that you will need this down time may help you not stress about it. It's not harmful really. It will always be a part of my son's life. he just plans it in. :)