Physical symptoms of stress?

Was just wondering if stress can have physical symptoms? i suffer ALOT with stress and anxiety. Had a few panic attacks mid-way thru the year - Doc prescribed beta-blockers but i didnt take them- For the last 6 months or so ive had nausea, headaches, stomach pain, tiredness and a bit of dizzyness. I tense up alot and the only time i ever de-stress is when i play football on a saturday. Ive had urine tests, spine and chest xray (all for different things) I worry constantly and was wondering if maybe stress is causing all this>? i have days where im ok but still worry as to when all these aches and pains will come back and that subsequently ruins the day im having. Its got to the point where im switching between docs at my surgery cos i want 2nd opinions. It is hard for me to relax cos i always feel threres something else that needs doing - this leads to a short temper and further stress. Any help with these symptoms would be much appreciated!