If you are suffering nausea and vomiting in pregnancy and it is much worse than you expected and impacting your life or you ability to eat and drink then you may need to seek treatment. There are a number of safe and effective treatments for hyperemesis gravidarum which women can try. How effective they are can vary from women to women but unfortunately for many women none of them act as a "cure", rather they help to control and manage symptoms.
The Institute of Obstetricians and Gynaecologists, Royal College of Physicians of Ireland and the Clinical Strategy and Programmes Division, Health Service Executive has produced national guidelines for treating hyperemesis gravidarum and nausea and vomiting of pregnancy in Ireland. The guidelines contain information about each of the medications available in Ireland and an algorithm for which to try and when.
In addition to anti-emetic medication it is important to correct dehydration with an IV drip if you can't manage to drink or keep fluids down.
You can download the treatment guidelines here and take them with you to the doctor if you need to.