She's been favouring the left boob for a while but it has got worse as today she's refusing the right side point blank. She fusses and shrieks if I even put her anyway near it (have tried rugby ball hold so she might be tricked into thinking it was left boob and also lying down - with the same reaction). I have fast let down and she seems to be feeding very quickly at the moment. Some feeds only 10 or 15 minutes in total including the bobbing off, smiling and talking She's 20 weeks and having a little bit of food but not much. Seems to be putting on weight although I've only been weighing her with me on the scales so I can avoid the HV. Any idea what I can do about this or any suggestion as to why she's doing it? I'm going to end up very lopsided at this rate.