Biology Forums - Study Force

Hello community :)

I would like to have some takes on my recent condition. I have already booked a doctor's appointment for tomorrow.. However I would like to read or research a little before going there, just to know what to expect.

It has been around a month since I first started noticing this, I feel tired almost all the time. I love mornings and wake up really early to get some work done and relax before heading to lab or class.
6 hours of sleep have always been more than enough for me. I usually like waking up 6am. And I don't go to lab until 9 or 10am. I wake up really energized, but once I get to lab or class, I feel like I just suddenly crash. . I am a coffee person, but I limit them to just 1 cup a day, maximally 2, with 3 spoons of powder milk. I drink plenty of water (the regular 2L/day). And try to have breakfast regularly. Sometimes I dont have time, and just prepare a small sandwich and take an apple with me to lab, and have that during a break. During my lunch break, I go back to dorms (10-15 minute walk from my lab), have a good lunch then head back to lab.
But I just cannot help but feel tired constantly. Especially headaches. I get many. The kind that tightens as a band across your forehead. They sometimes come in the morning, or during lab work. A definite headache towards 6pm and onwards. Sometimes its one sided across one eye. I just pull through it throughout the day *you know the can-do attitude with no medication. -Being a scientist, I try to keep my immune system fighting for itself. I refuse medicine*
Speaking of eyes, towards the end of the day, they get really tired, even though I won't be sleepy at that time, and burn. The burn you would get from a long day at the beach under the sun. I have to admit I do have a lot of reading be it online or on paper, and spend a lot of time on computers or pipetting. I always make sure to have my laptop's screen on the dimmest. Any brightness has been irritating my eyes.
I exercise regularly, every other day. I try going as much as I can, but this condition has exhausted me recently. I head back home on weekends to recharge with family. But somehow, I just feel the drained-kind of tired throughout.
When I do exercise, or fast walk to lab, I sometimes get really bad cramps that my knee and below go sore. This is not new to me, I have experienced these cramps before. I saw the doctor for these, and she prescribed difenflex (which did not do me any good).  And I am not new to exercise or anything. In fact, I have been climbing 4 flights of floors on the stairs for 4 years. Just this year, I live on the 7th floor, so I have been taking the elevator (saving time :P)
I don't know if this is a thyroid condition, or something else.
I don't get dizzy. I rarely get sick. Everything seems normal to me. I am not a junk food person. All home-made with plenty of veggies and carbs. Not a meat person. If forced, it is very minimal. It is sad because I had been anemic before and was treated. And I do know that we tend to absorb iron better from meat than vegetables, but still, I refuse.

The odd thing is, I think I have put on some weight despite all of this. But my weight is normal. I have been this weight before, so it is nothing new, and I never had such symptoms. Weight gain with minimal eating and more exercise? =/
Pregnancy- definitely ruled out.
I am rooting for a thyroid condition. But I do not know much about these issues. Could someone  please share their thoughts?

Many thanks in advance :)

Top reasons why you may be experiencing fatigue and tiredness.

By the way, I would rule-out thyroid too without any evidence.

1. Most people feel like they're less tired if they eat a healthy diet. Reaching for caffeine and sugar can backfire, leaving you more fatigued as your blood sugar levels fluctuate wildly. Eating healthy also means you'll carry less weight, and obesity is a big contributor to fatigue.

2. How much you sleep. Many people don't get enough sleep or have sleeping problems. If you never feel rested, then you probably need that corrected.

3. How much you exercise. Sometimes it's important to do vigorous exercise.

4. Could be anemia. You can remedy anemia with an iron-rich diet, heavy in meats and dark, leafy greens, or supplements if you have a chronic iron deficiency.

5. Deficiencies in key nutrients, such as potassium. This will require a blood test.

6. Yes, over- and under-active thyroids both can cause fatigue, still I'm guessing it's not this.