doctor put overweight

I am 35 weeks and only gained about 30lbs. at my last visit my doctor put I was overweight in my chart which is odd to me 🥴 I am naturally a small person. I was 129 before pregnancy and I am now 160 and still have some time to go. I dropped down to 115 after my last baby so i was excited about the weight gain. but it just caught me off guard that she even put that. is this to much to gain?