Sometimes i get very fatigued or tired in certain places.

drainage vectors

Its possible to be spiritual, to be sure always wear a cross and say in your head the Jesus Christ heart prayer.
Also it can be from so much electromagnetisn radiation, 5g and high refresh rate screen, lots of wifi frequencys etc...

You might have cancer.

Yes get your blood tested. I found out after months of feeling unusually fatigued that I indeed had colon cancer which was making me anemic.
At least it explained the tiredness and fatigue over very little exertion. Hope it’s not that serious for you, OP.

have your eating habits changed?

I usually only eat out once a month or so. I took a roll of the dice and ordered a hamburger with fries. I think the quality of the meat has gotten so bad, they have to cover it with seasoning made of pure poison. Don't get me wrong, it was delicious, which was far and beyond what that thing should have tasted like if it were natural.

about 30-45 minutes later I was doing everything I could to just stay awake and it felt like I was going through a spiritual battle the likes I haven't had since college.

weiiiiirrrrrddddd. I am not eating any more fast food for a long time if I can help it. that shit is so dosed up anymore, it will kill a person outright.

It's like a spiritual battlefield out there. Went to the grocery store this morning, and was exhausted the rest of the day. Yet, when I am at home and working on remodeling our home and doing very physical work, I have lots of energy. I think there is very bad energy or whatever running through and around people these days. If you can stay home, do so!