IM A 54 YO MALE THAT JUST HAD LUNG SURGERY

IM A 54 YO MALE THAT JUST HAD LUNG SURGERY ON MY RT LUNG. I WAS IN HOSPITAL FOR 9 DAYS. THE BLOOD VESSEL THE IV WAS IN IS NOW BLOATED BELOW MY ELBO ABOUT 1" ACROSSAND ABOUT THE SAME FOR 3 " TOWARD IV SITE. ITS HARD AND ALITTLE RED. AT THE ELBO WHERE VESSLE GETS NORMAL SIZE IT APPEARS TO ALMOST BE INDENTED. IS THIS TYPE OF CLOT DANGEROUS?