week 15 & still vomiting

Hi all, i’m already at week 15 which is the 2nd trimester however i feel like my vomiting has been getting worse. In a day, i can vomit up to 7-8 times especially after i eat. I will start retching out stomach acid too. i cannot drink water nor eat biscuits as it will trigger the vomit. i’m currently working and this is my first pregnancy. i dont know what to do as it is affecting my work and life. i have been hospitalised at week 9 due to dehydration but after i got discharged, i started vomiting again.#advicepls