Staph infection

For some time I´ve been suffering, from what I believe to be a staph infection. To begin with I have chronic pain in my lower abdomen from a car accident about 7 years ago, the pain seems to come and go, but is agrivated by extreme excersize, and it´s not caused froma hernia. About a year ago I was perscriber antibiotics for infection after getting blisters on my feet while hiking, the blisters became infected and would not close, the antibiotics cleared away the sores. Several months ago I suffered what should have been a minor cut, when it healed it left a hard white line where the cut had been, that seemed to sink with time, allthough not painful. Since then every significant cut leaves this hard white inbeded scar. So I saw a doctor who gave me cefedoxil, I took that for 10 days, it seemed to make the white scars come to the surface, but didn´t get rid of them all together. Now my syptoms seem much worse, and include, what I believe to be heart palpatations, my heart really seems to be beating hard, making my stomache and chest bounce. I become winded fast, and am often light headed. I also have been feeling lower back pain, what I believe to be kidney pain, and I urinate maybe 6 times a day. Also for the last 2 days I have been feeling pain, in my arms, which feels like bad circulation, and when I work out my muscles become very stiff quickly. My attitude is not vey good at this point, I am paraniod and stressed, I will go to see another doctor monday. If you have any word of advise, my ears are open.