How can i sleep better at night?

I can't sleep at night and I always fall asleep in the morning then a few hoursam 14 later someone in My family is always waking me up I am 14 and have iron-deficiency anemia and don't take multi-vitamins because i'd have to buy them myself it always causes me Extreme fatigue,Headaches,idk if this has anything to do with it but I am always just sore especially when I wake up I'm sore all over but especially my back and I can never get any sleep in my house.. :(