mOrnig sickness

When should I worry this is my 3rd pregnancy and honestly I never and I am saying never have I felt this gross I did have some morning sickness with my son but this time around I seriously can not keep anything down I try to eat small meals just crackers. And eat a couple of bites but as soon as I eat I get acid and throw up... I drink water and I throw up I do y know what else to do today at work I got a little dizzy I drank water I felt good and than bam I got acid and had to run to the bathro and my lips are so chapped my doctor's appointment is Monday and I work on Sunday in which I just started that job and I can not call out because I will get a right up for it