Can I get a tattoo when I have surgically corrected congenital heart defects?

Serious question about possible tattoo.. I was born with ASD VSD and coarctation of aorta. All of these were corrected at birth within 2 months and I had one ablation for an arrhythmia about 14 years ago. Knock on wood since then I've been healthy as I can be. I've wanted a tattoo for 6 years and I haven't changed the idea once so I think I'm ready to get it but want to know if it is safe for me to get one? My cardiologist seems to think there's no chance I can get one and assumes the worst will happen, I respect she's trying to keep me safe but I did my own research.. I read people who have corrected ASD and VSD have no extra risk from ordinary people for endocarditis (from tattoo infection that gets into blood and goes into heart I think) I also read a piercing is much higher risk than tattoo and I've had 5 piercings which 3 got infected and I was fine.. the place I'll be going to I know the owner he is very clean and is aware of my condition and will take extra measures to be clean.. so after reading this is there any reason why I can't get a tattoo?