Working while pregnant

Daisy
Today has been my own mini hell. I thought I was over morning sickness but every hour or so I have to get up from my desk and rush to the bathroom to vomit. I've made it six hours, three more to go. How do you moms to be deal with sickness at work? I went home sick just two weeks ago so I feel too guilty to ask to leave. I'm currently sitting on the bathroom floor crying, cause you know, pregnancy.