A coworker announced her pregnancy in January a week after my miscarriage. We calculated her due date around early September. She also said she was seeing the same doctors I was since they were local.  This week she stated her due date is a month later and she is seeing a different doctor now.  If I'm doing my math right and she isn't due until Oct that would have put her conception around the same time as my miscarriage and there's no way she got a BFP that early.  It's beginning to make me and other coworkers question is she even pregnant?