I can't keep my food down????

Natalie
Hello lovely ladies.
I'm 13 weeks pregnant and I'm unable to keep my food down. So far I've been able to keep my lunch down. But after that I can't If i eat anything it will come out . And the weird part is that I don't even get hungry I feel full like if I just ate. I've attempted to do crackers but it's not working. 
I was wondering if I am able to take protein shakes?? If so which one??
Is anyone else having this??
With my first pregnancy I didn't go through this, so it's been hard this past week.
Please help 🤰🏻