low hemoglobin and low hematocrit

Hi I am a 43 yr old male, weighing in at 162 lbs, height of 5' 10" I was worried about my sugar levels so I had bloodwork done, I just got my lab results back and saw my Dr. today ( it takes a month or longer to get in, I go to a free clinic) my hemoglobin was low @ 12.9 and my hematocrit was also low @ 39.2 he said I was anemic, are these vales real low and what could cause this, he ordered more bloodwork which includes another CBC w/Diff, ESR, IRON, TIBC, and B12 Folate, but I will not get to see the Dr or get bloodwork again for 6 weeks, everything else potassium, glucose, platelet count, etc was normal, the only other symptons I have are heavy fatigue at times (especially after large bowel movements or when I feel real full) for a few hours then it goes away, and some nausea at times when I eat lots of sweets, that is why I was concerned about my sugar levels was the nausea after eating sweets sometimes. Also some times I have tightenss and cramping of the stomach and only eat very little in the afternoon and sometime when I eat luch and feel this way I do not eat at all in the evening, I still fill full and bloated and fatigued, and it seems like I have more stomach pains/cramping more frequently especailly in the evening and nights now..

I might add and do not know if its related but a few times seems like once ever 2 months or so give or take (less now), I would get a chill (no fever, mostly it would wake me up at night) and feel as though I could not get warm and shake all over and be nauesaes also, would this be related in any way?
Thanks
southern gentleman