Agree, same here, esophagus & stomach irritated. Had severe nausea, sometimes vomited with no nausea & little warning, also experienced vertigo. Took zofran during wks 9-19 which helped but caused other issues. Illness worse with 2nd preg. This is last baby. I can't go through it again. I don't know how people with hyperemesis can cope. They must be super strong emotionally.
I had severe nausea almost my whole pregnancy and i threw up blood many times, went to the er and they told me it was normal because the stomach and esophagus are very irritated because of the constant vomiting.