Staying fit while pregnant?! 31 weeks.

♡ Brittany ♡ • 26 years old. Mommy to a 5 year old boy.
Okay, so I'm almost 32 weeks with my little girl. My 2nd and last pregnancy. I've gained almost 50 pounds. For those of you who have continued to work out in your pregnancy, what could do I do for the rest of my pregnancy that could help me not gain much more weight?