anyone resign after find out u pregnancy?

I'm a toddler teacher and I need the income so I'm still going to work and currently 7 week plus. I dont eat breakfast and medications at home as I'll vormit out after a bus ride so I'll take my breakfast with the children. I'm trying my best to find better solutions for my morning sickness and now it seems the whole day. More or less as for Singapore lifestyle many newly pregnant still have to work.