Gastric sleeve mamas

I had the gastric sleeve surgery to loose weight and better my health. I lost 64 lbs and have been able to keep it off for 15 months now. I recently found out im pregnant, about 5 weeks, 5 days and im super bloated and already gained 2-3 lbs. This is really messing with me. Im still exercising and eating well but im super afraid to gain so much ill be in 200s lbs and i REALLY DO NOT want to hit that number. Any advice? Are these concerns self fish? What was your experience?