Hi I really need soma advise please ...

im 8 weeks pregnant and I have been bleeding for about 3weeks and and it has gotten worse this last week I have gone to the E.R and they really didn't do anything but an internal ultrasound then I went to my doctor she told me that the baby's hormones  have been increasing I was put on pelvic rest but now this  bleeding has gotten and a bit stronger (its dark brown and a bit pinkish) this is my first pregnacy very scared about have a misscarriage any advise or things I should try ...

I heard that the pill progesterone helps has anyone taken this before and does it really work? Thanks