Cath recovery:
It is unusual for a person to complain of significant leg pain one week after a heart catheterization. The pain you are experiencing in your right foot may be related to the catheterization, however I can't be certain. I think it would be a good idea to have an ultrasound done on that leg to evaluate the blood vessels for any abnormalities related to your catheterization.
I doubt you are allergic to collagen plugs. What you describe does not sound like an allery. We typically advise patients not to undergo another procedure in the related vessel for 90 days following the insertion of a collagen plug. These plugs should be completely dissolved by this 90 day mark.
Thanks for your question,
CCF-MD-KE