Is my hair probably damaged?...read description?

yeah i would have to say your damaging your hair. i mean at least use an heat protectant spray/gel before straightening your hair. you may already have split ends...so just make sure you use shampoo and conditioner that has lots of minerals that help nurture your hair. ((avoid shampoos such as pantene that are actually bad for your hair...it has car wax in it ><))