When you say pain in your anus, are you talking about an internal kind of pain, or more an irritation/burning with bowel movements? If the latter, you could be dealing with hemorrhoids, which can be painful and are definitely exacerbated by moving your bowels. Anxiety will cause an increase in the motility of your GI tract which a LOT of times will lead to frequent BM's and diarrhea....which would cause anal irritation. Been there done that...Preparation H was my best friend for a long time. ;0)
Your best bet is to be examined by your doc to rule out any kind of medical cause for your symptoms. Especially with the testicular pain in the mix, there may be something that needs treated.
Obviously you are dealing with anxiety issues (and have been) whether or not these other symptoms are present. You need to seek some professional help to start addressing the anxiety. Ever try and therapy? Any other medications after you tried the first? These are things to discuss with your doc..there are so many treatments out there for anxiety.
Best of luck...update us!
Ive been to many Drs. in the past when i had insurance. I know it comes on only when there is stress involved. I generally try to stay stress free. I was supposed to have a meeting with a business owner to discuss some internet media service i was offering. I am not used to meeting people and im not a salesman but i need to act like one i guess. I didnt feel consciously anxious because im really not afraid. However, my physical body seems to think im afraid. That is my biggest problem. I need to know how to not feel anxiety physically when i dont feel it in my mind. I used to think that one must be having the thoughts before one can feel it physically. Its almost like I have a mental anchor set that initializes me physically first, and then i start to feel it mentally as the sensations intensify. I hope someone understands what im saying here...