I just posted my story today at 11:22 under A Story of Recovering from GERD. I did have some of the symptoms you describe (not in the story). I was once on my way home from work and felt my upper left arm and chest go numb. I panicked and started to feel heart palpitations. I rushed to the hospital thinking I was suffering a heart attack and had tests done and came out diagnosed with a panick attack. I have experienced different manifestations of stress (colitis, chronic fatigue - in the story, anxiety attacks, eye palpitations, etc) over the years - and I do remember that when I was 27 I suffered from quite a bit of stress related problems including colitis. I think the vast majority of us suffer from some manifestation of stress or other (weight loss/gain, headaches, irritability, etc). Everyone's body is different. The last two doctors I worked with (I saw a total of 10 specialists in a one year period) were adamant about how stress can cause all sorts of symptoms - including anxiety attacks, chronic fatigue (I was sleeping for 12 hrs), and GERD. In the end, I was able to eliminate all of my symptoms. I just had to relax - Yoga helped. Don't stop your bike rides. If your GERD is not out of control, try attacking the nervousnous first, it might help with the GERD as well as the chest pains. If that does not work, I agree with others that you might want to start taking care of that GERD - it can get nasty over time. Be patient though, your body takes time to get back to its regular old self. At your age, I had excrutiating colitis for 5 months and my doctor did not believe in presciptions for it because he said it was just stress. I was convinced I had something more deadly, but the doctor knew what he was talking about. I starting going to church and it helped me relax and ... you know how the story ends. Good luck!