Sometimes okay sometimes not okay

I'm 10 weeks today. Had my first scan last week, all checks out, Dr said baby measured right and husband and I could see our baby's hearbeat. I'm kinda worried. Normal for symptoms to come and go? Like this morning I was feeling terrible with the naseous and vomitting of the acid that I had to miss work. But now I'm feeling okay and have a good appetite. #1stimemom #advicepls #firstbaby #pregnancy