My gp said i have vitman d defincency. does this explain the tiredness and aches and pains? i also lack iron. please help?

Anemia: Fatigue and aches can be due to many things but could be related to your lack of iron and anemia due to this lack. You doctor likely checked you blood count and if anemic he placed you on iron supplement. A recheck in about 3 months will show if this deficiency is corrected. Vit d deficiency alone is unlikely to cause your symptoms but supplementation would be a good idea to avoid bone loss.