Elphers,
I have hemolytic anemia, and I can tell you that the exhaustion hits a few weeks before my blood counts start to go south. Your body could be trying to fight the anemia, and it's probably succeeding because your counts are still ok, but still ok - you know a hemoglobin count of 12 is considered ok, but if it's falling, well, that spells trouble. If it's 12 and holding, ok, but you could be on the verge ofbeinganemic. My advice to you is to get the counts checked again. I usually feel all the symptoms a good two weeks before my blood causes concern on my docs part.
You have to listen to your body and keep an eye on those counts. Just because they are "ok", doesn't mean they aren't dropping. I always ask exactly what the numbers are - all of them - I think I know more about it than some of the nurses, simply from my experiences with how my blood acts when my hemolytic anemia is flaring. Other counts in the CBC can also tell me if I'm dropping. My RDW count rises when my anemia is acting up, and other counts as well. They usually don't mind running you a copy of the report. Why don't you ask them for one? If you have questions, I may be able to help. B12 shots can sometimes make your counts look normal when in fact you are anemic. It's such a crazy balancing act with it all. If I can help, please let me know. I certainly sympathize.