HIIT before prego...but during pregnancy?

Stephanie • 32 years old. Married almost 5 years :) career in law enforcement and absolutely love it. Hubby and I are TTC starting February/March 2015!
I work out pretty hardcore 6 days a week. 3-4 days I incorporate HIIT into my routine. I'm 32, workout junkie for 10+ years. If you are familiar with HITT, can I still do it when I'm prego? Excellent workout, burns fat, builds muscle, awesome for toning....don't want to give it up!...Go!