What Causes Shortness Of Breath, Fatigue And Discomfort Joints?

Question: I am a 45 yr old female with a history of vag hyst without bilateral oopherectomy 10 yrs ago. for a while now, i have been experiencing a strange range of symptoms. I am 5 ft tall...98 pounds. my current meds include Toprol xl 50 mg, Vybrid 40 mg, synthoid 100 mc, Ritalin 20 mg (twice daily) xanax .25 prn and ambien 10 mg nightly. for the past several months, I have been experiencing some strange symtoms. shortness of breath, fatigue, and an all over physical discomfort in my joints. in the last everal weeks ....I have began to suffer from facial flushing that is very hot to the touch, chills mostly at night and night sweats so severe that i wake up so covered in sweat that I have to get up and change my clothing as they are soked. I am very anxious, depressed and suffer from a very serious state of general malaise and disinterest. it also seems as though I always have a very intense sensation of unease. I also have had a long bout of diarrhea. honestly, I just simply feel unwell. any suggetions?