My friend is 37 weeks pregnant and for the past few weeks has spells of feeling light headed like she's going to faint, has had slurred speech and today vomited during a spell. She went to ER and they checked blood sugar and BP, both were just a little high but not enough for concern, she has no contractions and is only 1cm dilated. I'm concerned she may have a cardiac issue or TIA or a blood clot or something but they haven't done an EKG or anything beyond testing for high blood pressure (pre-eclampsia) and sugar - they sent her home again. Help?