I had a vaser lipo suction 3 days ago but did not experience any form of bruising. Is this normal?

Not all liposuction gets significant bruising.  If you are unhappy with your results please speak to your physician and ensure he was a full body VASER HD liposuction physciain wtih expensive experience in body shaping and not just traditional fat reduction.  At this point you should be using compression, RF treatments like venus legacy / exilis ultra / inmode forma or contoura and lymphatic massage to get you through healing.   We always add shock wave therapy such as cellutone, z wave, and eclipse evive to help prvent scar tissue formation and ensure an even and smooth result. It will take 6-12 months to see the final outcome.   If you are unhappy you can get a revision procedure by an expert in VASER HD lipo.  Best, Dr. Emer.

Hi and welcome to our forum!
Congratulations on your recent surgery. Vaser liposuction utilizes ultrasonic vibration to loosen fat, promoting a less traumatic fat extraction than traditional liposuction. This causes less intraoperative bleeding which results in less postoperative swelling and bruising. In spite of this, some individuals will still bruise, or may bruise late. 
Best wishes...