27 weeks with 28lb weigh gain! 😩

Currently pregnant with didi twin girls and I’ve gained 28lbs at 27 weeks. I feel so heavy and uncomfortable, I was really hoping to keep my weight gain at 35lbs total but considering where I am at already it doesn’t seem possible. Is this too much weight already? I don’t eat a ton throughout the day and try to stay mostly healthy. I also still walk most days, it’s getting a little harder bc of back and RL pain. Any advice or insight appreciated!!

Thanks ladies! (Pic of me below)