The fact that you are still throwing up at 12 weeks of pregnancy may be related to your own health or to your hormone level. Generally speaking, the early pregnancy reaction starts to appear around 6 weeks of pregnancy and gradually decreases until it disappears after 3 months, but some people may have more severe early pregnancy reactions and even last for the whole pregnancy week, so everyone’s situation is different. If the early pregnancy reaction is serious, you should pay attention to your diet, eat more easily digestible and light diet, eat more nutritious food, and have small and frequent meals. If you experience severe vomiting, you should go to the hospital for a timely checkup, urine ketone body test and electrolyte test, so as to provide timely treatment.