I'm taking a liquid iron I found in the health food store. I have managed to get my iron out of the danger zone. But I think you should get a full blood work done. Sugars as well as your vitamin levels and your thyroid. If your low in vitamins then it is harder to absorb iron. Any of those things can cause exhaustion, feeling cold and like your walking through a river up hill! It's a horrible feeling.
I have a thyroid problem which is playing havoc with my life. I have run out of patience with my drs too. The canadian system isn't better just different.