What Causes Tiredness,back Pain And Headache?

Hi, I'm a 28 year old female, I'm a little concerned about my health. I'm continuously tired, bruise easy, feel like I'm out of breath, resting heart rate of 95bpm, emotionally unstable (find the simplest of tasks hard work), get really sore back and neck giving me a headache most days. I just would like to know if there's something wrong with me or I'm I just unlucky to have all these different symptoms. Thanks.