By right should put back the weight you lost during first trimester. If it concerns you please get advise from gynae. They know your body condition and what is best for your ideal weight at week 20
I didn’t put on any weight during my first pregnancy. As long as baby is growing well, it shouldn’t be a problem. Do check with your gynae.
I didnt put on weight thruout my whole pregnancy. If its a concern i believe your gynae would tell u.
Ira Rizal