I'm 27 weeks pregnant and the last couple of days I've been so dizzy and light headed. I go to stand up I feel like I'm going to pass out like my legs are going to give out from under neath me. I'm so afraid that in going to fall and hurt the baby. Also I've had really bad heart burn that nothing seems to help. It's so bad that I feel like in having a heart attack and I can't breath from the pain. I've tried tums and milk and they only help for a little while. I've tried propping myself up when I sleep still nothing. Any advice on how to get through this last stretch of pregnancy would be great thanks