Hi everyone! I have a question — at the start of my pregnancy I didn't…

Hi everyone! I have a question — at the start of my pregnancy I didn't have morning sickness. Now I'm 19 weeks and sometimes I vomit, specifically at night either before bed or while asleep; I wake up because I'm about to throw up and run. I'm taking Yodomarin 200 mg tablets and Fersinol Z. When I vomited just now everything was yellow like bile was coming up and there were little pellets from my Fersinol tablets. Question: can these medications be causing the vomiting? Initially when I started taking Fersinol I had diarrhea — sometimes it went away, sometimes it came back. It does have side effects. How do you cope after you've thrown up? I feel awful.