You will be just fine
I got pregnant at 9 mos out... I had a healthy boy. I did gain almost 30 lbs and really freaked, but it came back off in 10 days, no lie. I am now working on losing the rest of my weight to get to goal. I was very strict, though, with my eating. I ate very healthy most days and did my protein drinks. I also was very good about my vitamins. You are also at a time where you will be able to eat more, so try not to worry...congratulations