I am expecting in August this year and I was told by a friend that there will be major changes to the vagina post delivery. Could somebody please tell me what bodily changes I can expect?

The first thing is to overcome the fear of the episotomy stitches. For me, I need sometimes to avoid thinking about the cut and pain during intercourse post delivery. Also, if you are breastfeeding your vagina will be very dry and painful during intercourse. You can use non petroleum based lubricant to ease the pain initially. Apart from that, after few sessions of "practising", you will feel normal again.