Heavy heart

I finally got my BFP, and went to the Dr today and was told there's a sac there at almost 7wks but the sac didn't look how it was suppose to look. I do have mild camping that comes and goes but Dr told me to prepare for it to not to continue to develop. I was sent for two quants and another scan. Have any of you ladies had this and the baby and pregnancy still turn out good.... Me and hubby are pretty bummed....