Bleeding 7 weeks

I am 7 weeks tommrrow. Woke up and wiped bright red. Decided to go to the ER to be safe. Blood had come and go off and on, enough to scare me and my husband but not an overwhelming amount.
Doctor did a pelvic exam and said to come back in 72 hours for a scan. More blood work etc to see if my numbers doubled. 
After the exam I started bleeding a lot
More and having back pain. It stopped but I started passing clots. Sorry tmi! I am really scared and trying to be positive.  But it's extremely hard. 
The doctor said she couldn't tell me much more then to come back and see if my numbers increase to see if it's viable. 
Any one else dealt with this at all? I am just a mess over this. Can't stop crying.