Shala... well you know this will put you at a risk for infection for a couple weeks, especially being in your lip. I am assuming you have been told about prophylactic antibiotics before you have procedures done (called bacterial endocarditis prophylaxsis) so I would definetly recommend you get the dose of antibiotic before you do this and since you probably have to call a physician to get this dose ordered i would just ask them. I am sure your cardiologist wouldnt mind you calling and asking that question, that is what they are there for.