Stop going to the gym if you must exercise than go for a walk in the woods.Eat foods that make you feel comfort..Ask the doctor for a sleeping pill that knocks you out a few mins after you take it.You are important and you need to sort out your priorities like what helps,try listening to music or drink some milk before bedtime-go to bed no sooner than 9-10pm and rest your body.Sounds like you need rest and a hug..Yes I think you suffer..and things get bad for you than that's a mental illness don't dout yourself just because you don't self harm or do crazy things to make you crazy even not sleeping properly can be a disorder in its self.be kind to yourself