I feel so sad about this... my sister was 16 weeks pregnant when her doctor couldn't find the heartbeat anymore. She's having a D&C sometime soon... She's not the kind of person to share feelings (my family is bad at it) but I can't imagine not being devastated about it. I don't really know how to be a support. I was looking forward to being an aunt for the first time, and feel depressed that I won't be. She has PCOS so it was very rare that she did get pregnant. So I don't know if she will ever get pregnant again. I guess you can never know. Is miscarrying that common? She was in her 2nd trimester. She takes metformin for pre-diabetes associated with the PCOS/insulin resistance, and they said after 14 weeks ( i think) she had to stop taking it, and within a week she was told she now has diabetes, and miscarried. Just sounds so strange.