black-out

I felt the same nung first trimester ko, when I was commuting from work using the train. Mabilis din kasi ako mapagod nung first trimester. So I will go out of the train talaga to sit on the benches. Avoid lang siguro yung sobrang magpagod, or yung matagal na nakatayo. But I read somewhere that this is normal. You can also consult with your OB.