Weight Loss During 1st Trimester

Hi ladies! So I'm 8W5D, my morning sickness is getting unbearable. I'm considering going on medication but am still trying to hold out. I've realized though that I am down 9 pounds since I found out that I am pregnant about 5 weeks ago. Just wondering if any of you mamas have also lost weight? If so how much? I'll be calling my doctor tomorrow, but I'd love to get some insight into if this is "normal" or too much loss? Thanks!