Dear Irene,
No, it is not a common complication to have an inflammation of the artery following catheterization. It is especially unusual to continue to have pain 4 months later. I would even wonder if it is related to the procedure at all? Perhaps your internist would recommend seeing a neurologist to make sure there is not some type of nerve problem.
Hi Irene! I had a heart cath about 18 months ago to help diagnosis time for surgery for a congenital bicuspid aortic valve. I was also a "bleeder" only it happened in the operating or cath room. Several people literally jumped on me to stop the bleeding. The result was a huge hematoma from my knee to up in my lower abdomen. I couldn't walk for a few days, and it was sore and ugly for a long, long time. However, there was no real extended pain, just soreness, and no infection. Sounds like you need to get someone to take another look, although some things can take a long time to heal and some infections a long time to clear up. Good luck!