I have 4 weeks left to go. For the last few days I haven't been able to stay on my feet for any longer than 10/15 mins at a time without feeling suddenly light-headed and having to sit down. It can take me up to half an hour to feel "normal" again. Not been out the house in days because of this. Anyone else experiencing anything similar? Never had this with my first pregnancy. Also been feeling out of breath even just from having a 5 minute conversation! Really hope this doesn't last :(