Nearly fainted

I was standing in a crowded bus 31 just one bus stop from my workplace when I suddenly felt giddy and needed to sit down. :( This has never happened before. Luckily, there was a colleague on the bus and she supported me when I told her I was feeling giddy. I felt better while walking to office and tapow some hot milo at the canteen. Was thinking of seeing the doctor if I still don't feel good but luckily, everything was ok after that. I've only got 1 day MC left so don't want to use it if I can. Did am online search. Looks like fainting spells are quite common. Next time, must try and leave the house early and get a seat on the bus. :)

Dizziness and/or Fainting
When standing in one place you may feel dizzy or even faint. The growing uterus compresses major arteries in your legs which causes your blood pressure to drop making you extremely light headed. Skipping meals or going too long without eating may cause you to feel dizzy or faint. When not eating frequently enough it causes low blood sugar. Blood sugar is the primary source of food for your baby so it will be depleted much more quickly.