Thyroid problem???

Holy Moly... I really don't know what is going on with my body the last couple weeks.
I have never felt so tired in my life, I don't think. I know getting a good, sound night sleep is super duper important to weight loss. And I've been told a billion times that exercising is supposed to help you feel energized throughout the day and help you sleep better... Well, so far, it hasn't helped me.

I have been a good girl and have been exercising 4-5 times a week, whether it be on my elliptical or an exercise dvd or working out with the nazi gym partner or even painting my ENTIRE apartment living room (which is a very deep red color which meant I had to put 3 coats of paint in order for the wall to be a solid color, NOT to mention the white base boards I had to re-paint too.. extremely exhausting work with very sore limbs and even a bit of cardio)... anyway, I've been doing what I'm supposed to be doing, and nothing is kicking in yet. I mean, I'm down two pounds, but, to be perfectly honest, it should be much more in a week and a half.

But, despite the fact the weight is being a stubborn bitch and not coming off without a fight (as usual), I have been fighting all day, everyday for the last week or two to keep my eyes open. I have absolutely no energy to do anything, and I just sit at a computer all day for my job, not very strenuous work at all, and I can't stop yawning and drooping. It's ridiculous..

I know that something is going on.. I don't know if I'm supposed to check my thyroid or something, or maybe I just need to get an insane amount of sleep one night.. but this lethargic feeling that I am going through is definitely hindering my weight loss. Yes, I exercise at least 4 times a week, but I am STRUGGLING to get through the workout. Some people at work suggest I do go to the doctor and get my thyroid checked out, it wouldn't hurt to find out, right? If my thyroid isn't an issue, than at least I can check that off my list of "what the f*** is going on?" possibilities. If there is something going on with my thyroid (and I have heard from a lot of people that thyroid issues do hinder energy levels and weight loss dramatically and characteristically) then maybe this is the answer that I have been missing this whole time...

Hmmm, I don't even know what to hope for...