Worried

Nikki • I`m 30 engaged to the love of my life! Pregnant with our 1st child!!
I started bleeding yesterday n stopped last night, I'm 14w 2d, went to ER, they said I have the subchorionic hematoma still which has got bigger, they also said I have placenta previa, my hormones have dropped n could abort! Has anyone had there hormone levels drop n have a successful pregnacy?