I posted this in fitness and exercise but I'll try here too

So. I haven't been on here in forever mostly because I got pregnant. I was doing AWESOME prior to pregnancy, toning, gym 5 days a week, eating clean--then again that's always been my main focus--being healthy.
I'm now 6 months pregnant and aside from seriously slacking for two months (school and moving and life ugh) I can finally get back to focusing on being healthy with baby. I went to my 6 month appointment today and was told I gained 30 POUNDS since I first started going there. I have a 5lb window to stay in the recommended weight gain so my OBG told me to start watching what I'm eating and get a little more active.
I walk to work daily (about a mile each way)
I stand at work rather than sit at my desk
I do basic squats and leg lifts
I have started logging my meals and am trying to limit any and all carbs, same with sweets (I can't help my little guy likes water ice of all things though)
Anyone out there with awesome suggestions? She said I still have enough time to reverse the weight gain and stay within the healthy limit.
Thanks in advance to everyone