What Causes Anxiety,dry Mouth And Fatigue?

Hello I feel as if I have an underlying condition with my hormones as I don t feel normal. I Suffer from Anxiety, Depression, Mood swings I have a constant dryness in my mouth and heavy feeling in my head. I get fatigued fairly easily and find it hard to do jobs quickly without becoming exhausted. At 15 I started to have palpitations they have carried on for 5 years I am now 20. They get worse when I exercise hard so I try not to as it triggers them, but the problem is I am not really improving in my strength as I cant push it to much otherwise it will trigger them. I also suffer from mild cystic acne that does not seem to improve and recent digestive problems. Recently in the past 2 months I have developed a testicular atrophy that has come out of nowhere, I have had an ultrasound tests to diagnose what it is, however no bumps no cause for concern, they say there might of been some torsion when I was younger but why has it developed now? Lots of small problems are making this into a big problem and it feels as if i cant progress, any ideas of what the symptoms could be? I have been to the doctor had blood tests before i also have thalassemia minor but shouldn t have anything to do with it. Most recent visit for my atrophy but no real indication for why its happened just said it was torsion when i was younger but if so why did it reduce in size now. I would really appreciate an insightful answer that could give me an indication of what my symptoms mean or some advice on where to do now, thankyou.