Randomly tired.... but not pregnant

[roke]

Just wondering if anybody randomly gets tired... I have enough sleep the past few days, but all of a sudden I will get extremely tired.

Yesterday morning I got up easily, had no problems in the morning, started work and about 15 minutes later fatigue hit me hard....  All of a sudden I was instantly tired and was like that for the rest of the day.  By 8:30 I was in bed.

The same thing just happened again today....  I had 8 hours of sleep (a good sleep), got up, went to work and just now the fatigue hit me again.

I am on CD11 right now and on cycle 2 off b/c and ttc.  As far as I know I am not pregnant (as 2 tests came back negative).  I had kind of a 1 day period (it was really heavy for 2 hours) then it tapered off over the next day and that was the end of AF.   Any ideas??  

[roke]

I was looking into ovulation and it says some people may be tired during ovulation... (TMI) but I also have an increased sex drive... so perhaps ovulation is just around the corner....

[ashiepooh]

Sometimes a thyroid disorder can cause extreme fatigue.  But I would maybe call your doctor for a blood pregnancy test.  They also can check your thyroid at the same time