No weight gain 14 weeks! Not sick!

Chloe
So I am almost 14 weeks and have gained a total of 0lbs :/ 
My BMI is about 22 so fairly average and I've had morning sickness only twice! I feel like I've been eating well, just like before I was pregnant.
I haven't got a midwife appointment for a few weeks now- is anyone else in the same boat?? Can baby and everything still be growing okay if I'm not gaining weight?