Hi my name is Angel an i'm 20 years old. 2 years ago while i was pregnant for my son i would start to sweat, get dizzy feel sick to my stomach then collapse, but it would only happen when i would stand in place for more then 5 minutes . I would feel so weak and not be able to get back up. The dizziness would go on for about 10 to 20 minutes and still feel sick to my stomach then once the dizziness would go away i would feel cold. I told a couple doctors about it and they told me it could be from pregnancy. Well 2 years has passed and it wasn't happening as much but the past few months its been happening to me almost everyday now.