I think bani already knows about anu being pregnant but for the sake of Mr Walia, is not telling anyone, she did mention she loves anu like a sister and bani as we know will do anything for her sisters. I don't think bani is pregnant because she is not the type and it doesn't make sense she was just yesterday telling jigs to look after anu and then she has done a big mistake like this, dont think so.
Bani i think will again be insulted and anu will either talk or mr walia will some how find out what bani is doing to protect his family and love her even more and then take her side in anyway possible and this leaves jigs puzzled but when she finds out i hope she has a reality check and start thanking bani.
Sorry for going on but, this is just my opinion sorry if i offended anyone elses opinions!
love eran!