my sister in law has had 2 consecutive miscarriages.. the first miscarriage happened last year that is may 2008 and 2nd was happened this year may 2009 and both were done during 10th week of LMP due to no fetal heart flicker... now its her 5th week of LMP (as she had last menses on 7th august 2009)... she has conducted 3 home pg tests but all were negative then she had beta hcg 4 days ago which is also negative i.e; <0.1 and she is having watery breasts having pain in them... besides that she is having other pregnancy symptoms like nausea, cramps in lower abdomen etc... so are there any chances that she is pregnant? and when should she conduct her next beta hcg test? and if she is not pregnant then why is she not having periods?