K., you are not alone, although i am motherless until friday, i too have the same problem,, of course, i am carrying twins and am really big, so breathing is hard for me, too, i feel like a obese woman, having to pant every step of the way, passing out a few times, I'm 13 and in junior high school and i have been having a lot of sick bouts, runs to the bathroom and going to the school nurse lately, i passed out one time outside of one of my classrooms before i went to class, i was so winded, dizzy, woozy, my head was spinning, and i felt real sick, i threw up, then collapsed and fell to my knees, saw a friend, weakly called her name as i reached out my hand, then passed out, the next thing i was in the schools infermory, a nurse checking my vitals and wiping my sweaty head, as i looked up, my head spun and i said " whoaaa, wh- where am i? '' and my head plopped back down, the nurse caught it in her hands and laid it down gently then said " sh, it's ok, M., your in the school infermory, you passed out, your friend anna brought you in, she found you lying outside your classroom n the hall, she said you had been sick, you threw up, and she saw you threw up blood, you passed out before you saw it, you were really out of it from what i saw of you when you were brought in '' i survived that, but i'll tell you, K., if i get pregnant again, i'll wait until i'm older and can handle the pain beter