I am 12 weeks pregnant and have not had any vomiting until today. Do I need to be concerned that it started this late in pregnancy?

Not necessarily. It is not necessarily bad - continue with small, frequent meals and plenty of fluids. Nausea could also be a sign of other illnesses such as bladder infections - if it persists or worsens with fever and other symptoms see your doctor.

Related Questions

I am 12 weeks pregnant and have not had any vomiting until today. Do I need to be concerned that it started this late in pregnancy?

No. Not unusual to start nausea or vomiting @12 weeks. What is important is the freqency of vomiting, intensity, quantity, and color of the and the color (green, yellow, coffeeground color, any any shade of red., are you taking replacemnt fluids. Severe prolonged vomiting can put you in the hospita for rehydration and recovery.