I knew I was pregnant before I actually found out. I also knew my sister was going to be pregnant with number 1 about a month before it happened (I had a dream). Last October I dreamed that a friend of mine was pregnant, and 3 months later she was and is expecting her first baby this coming October. I'm also very good at working out what people are having. I knew my sister was having girls each time and she knows she's having a girl this coming June. I told her her 3rd child would be a girl months before she even conceived.
I can't explain these feelings that I get but I only really get them when it comes to pregnancy and babies.