need to improve on Communication

On the 7th of August 15, left my home at 3a.m (standerton) rushing for 8:15 flight, I checked in at 6:00 a.m then headed to the check in gates, sat at Wimpy for a snack. Went back to the gates at 07:30 sat there till i saw its running late then asked one of the ladies as to when are we boarding, she told me that the flight has been postponed till 3a.m, in all that time nothing was communicated to me till a friend called to confirm what was said. Then went out to hear what else must we do, told to go for breakfast at Wimpy and wait, keep on checking the boards till 3p.m. Then went back at 1p.m to find then what then the only thing they could say we are sorry mam, we had to ask about lunch, then we given a go ahead. Taking into consideration that i am 10 weeks pregnant, all the stress that i went through on that day. I was a programme director in a wedding which then I missed, thanks to British Airways. When I went to check at 3p.m i was told that my name is not on the list because I was transferred to SAA without being told such. I got sick the whole weekend due to the trauma that they put me into it