Weight gain?

Kailey • 23. First baby ♥ due July 28th 2016 :)
Gana be 22 weeks Tuesday and everyone keeps telling me how small I am and that I need to eat more that my baby isn't healthy or whats wrong with me it makes me sad I feel like a bad mom already but I have morning sickness bad and just started taking zofran again I weighed 132 before pregnancy and I think I'm 136 now but it's not my fault I feel like shit daily ughh AND then they start telling me how bad zofran is and yelling at me like ok jeez I'm pretty sure not eating is alot worse..