I have an old college friend not very close but we meet up once a year or so. Sadly she's suffered a lot of very early miscarriages. When I last saw her she was 4 months pg and optimistic that this time it was different (she'd never got nearly that far before). She was due 3 weeks ago but I've heard nothing. I'm so worried that it's all gone wrong again for her. I don't know whether to contact her and ask what's up or wait a bit longer. I'm worried that if she did miscarry soon after I saw her I'll just be reminding her of what she's lost. (I had a couple of e-mails and holiday postcard since I saw her then but no mention of pregnancy.) What do you advise?