to the initial question, yes, i believe anxiety can completely mess up your whole system!!! if you have a physical problem in that aspect in the first place, i think being anxious makes it even more unbearable. i'm sorry for anyone who has to endure this nightmare....
welcome to the board! i'm truly sorry about what you're going through!!!
i also have depresssion, anxiety, and used to have panic attacks (before these were brought under control by various meds tried over the years)...so, i can really relate. my anxiety was so bad, that it led to panic attacks with agoraphobia (i was afraid of leaving my house alone, b/c i thought i was going to faint or die or something on the streets, and nobody in my family would know where i was). it was the most horrendous experience (besides migraines, which i also suffer from) that i went through in my whole life--related to health.... the thing that helped was meds (talk therapy took too long, and my psychologist/therapist whom i'd been seeing at that time though i needed to be "stabilized" first, before we could even start talking...), so i thanked God when they placed me on Effexor (they chose this one b/c it has both antidepressant and antianxiety effects), and a benzodiazepine (Klonopin)--that's how bad things were.
after a while, i swear, i couldn't believe the change. i mean, it was like i was a different person. i used to keep journals before i got help, where i wrote all about my feelings of rage, anger, loneliness, hopelessness, hatred, anything and everything i felt. once i was "better" i stumbled onto those journals one day, almost by chance, and re-read some of the entries i had made. i thought to myself, "oh my god, i can't believe that person is/was me!!!!!. i wanted to help that person in those journals so much, i wanted to tell her not to worry, there's help out there, not to be so miserable, not to suffer so much, that it was going to be ok....
i'm still battling my "demons" so to speak, since we all know there is no cure for our ails, but i've learned more over the years, and i know that the dark abyss that comes, it comes in cycles, and it eventually passess....no matter how dark and hellish it gets!!!!!!
i was 25 when i was diagnosed with having had a major depressive episode and anxiety/ panic disorder. i'm 36 now and i still struggle with it on a day to day basis. we all know these things don't go away. i believe i have dysthymia as well (a chronic, low energy, low motivation, low self-esteem, low or no desire to socialize with others, low desire to do much at all, except work, since i NEED to do that--basically "low" everything, on a daily basis).....i asked my boyfriend to buy me one of those SAD lamps for my birthday, since i've noticed over the past two winters that the depressive symptoms get much worse over the fall-winter months. i hope it'll be of some help.
anyway, i'm truly sorry for my rambling....if i can be of any help to you (or anyone else here) please do not hesitate to ask any questions, or just to vent.
wishing you all a relatively good and peaceful day.