Assume you are prescribed the "blood thinner" ( anti clotting) due to the afib. I had same problem and decided to do the ablation procedure which cured the afib. My concern was that while a minor surface bleed is easy to control, there is the serious danger of an internal bleed or brain bleed which is quite serious and difficult to control...The ablation procedure does not always work to control the afib but worked for me. It has been 2 years since my procedure.