Anak, please see your OB as soon as you can, walang gana for a whole day during pregnancy needs checking, kasi baby mo needs nutrients every day para lumaki ng healthy.
A few of my mum friends had the same issue sa first trimester, but important talaga na alam ng doctor kung ano ang nangyayari, baka need lang ng small adjustments sa diet, or baka may iba pang dahilan. Don't worry, meron solutions, pero kailangan mo talaga ng professional guidance. Ingat ka, ha?