14 weeks pregnant and only gained 4 lbs

Kristin
I'm 14 weeks tomorrow and currently weigh 106 in the morning. I lost a bit of weight before I was pregnant from being sick then having morning sickness ontop of it. 
Ive only gained 4lbs so far and I'm concerned it's not enough. I'm 5'4" and only showing bloat.
Anyone else like this?