I had a BBL and I'm experiencing a faster heart rate than normal and I get tired very easily. Is this normal?

Certainly your stamina will be less during the early post-op and your heart rate may go up. It can also go up with other things. The most common is dehydration.  Best to review with your surgeon. 

Shrimpbina,
Depending on when you had your BBL this may require urgent intervention. If surgery was performed in the past few days, fluid shifts inside your body could be causing this, and recovery makes you tired. However, blood clots to your long, and fat getting caught in your bloodstream can cause these same symptoms, and may be life threatening. Hopefully you've sought medical attention by the time you've read this and all is well :) Let us know what's going on!