Szia, psychopika :)
So, you said you had 3 months of hard-time anxiety? Can you relate that period of anxiety to something in your life? Like a stressful period, traumatising events, etc. Did the anxiety subside after 3 months? If yes, what made it to disappear? Was that anxiety related to medical (thyroid, etc.)
problems or mental problems? Did you take any medication? What were the symptoms of the anxiety period?
Now, depression... I have been diagnosed with depression, but I still don't know if I have it and I'm confused about what depression really is (a mental and emotional state which involves lack of emotions and lack of motivation or sadness). According to the book 'The Emotional Life of The Brain' by Richard J. Davidson and Sharon Begley (megtalálod magyarul az ncore-on), people with depression can feel joy and can react positively to good things, but the positive emotional state generated by these positive stimuli is not sustained for a period as long as in healthy people. In other words, they can feel happy for a short period of time only. When i was diagnosed with depression i felt tired, sensitive to heat, i had a bigger need to sleep, drowsy, sleepy all day, tired after waking up, headaches, brain-fog, procrastinated very much and i was more impulsive. At first, i went to a check if my internal organs were OK. After the tests, the results showed that everything was OK (checked for thyroids, testosterone, glucose levels, calcium, magnesium, etc.), except a liver ensime which was way too high, so maybe that caused the tiredness. After this, i went to a psychiatrist, she prescribed Sertraline (a selective serotonin reuptake inhibitor, SSRI). I did not feel any difference or effect (nor negative, nor positive), only a few sexual side effects. After (or simultaneously, i don't remember) with the treatment with sertraline, I was prescribed Elontril (Bupropion) whis is a dopamine-norepinephrine reuptake inhibitor. Again, no effects, but after a while i became more energic and my need for sleep and day-time tiredness subsided. I don't know which medication helped, or what helped but since then i have not experienced that lethargic, zombie-like feeling. Maybe it was that liver problem i don't know.
At the beginning of your post, you mentioned hypochondria. What makes you think you have hypochondria? Do you perceive any symptoms related to you (running nose if you have a cold, fast heartbeat, negative thoughts, etc.) very sensitively? For example, if you wake up from a nightmare, and you feel your heart pounding very hard what is your reaction? Do you try breathing slowly and think of something nice or you think that 'OMG I'm having a panic/heart attack and I should call the ambulance'? I ask this because people react differently to the stimuli coming from their body parts. Some people are more aware and sensitive of them (more likely to be hypochondriacs) and some of them don't even notice.
Maybe the anxiety exhausted you, hence the depression-like symptoms. Have you checked your cortisol (stress hormone) levels?
Since when do you have anxiety? Again, i recommend that book, what i liked about it that it described the experiments made by the author to find the pathways in the brain which activate when negative or positive emotions arise, so it has a scientific base to it, it's not a crappy self-help book. Also, it says that a trait (aggression, shyness, confidence) is the result of BOTH genetical and nurturing / environmental factors.
I hope you will get better, be patient. :)