Hello moms! I'm 22 weeks preganant (5mons) and earlier this morning as I have my online lesson on skype my vision suddenly turned black and its blurry.. I feel terrible and I got so dizzy.. Then I stop our online lesson and I told my student that my vision is slowly turned black and I'm having difficulty in breathing. What could be the possible cause of this? I need some advice and share to me if you also have this kind of experience. Thank you so much!😊