need help!!

Jennifer • 28•Mother of two•Wife•Photographer
So, I started with my levels at 394.6 two days later they went up to 575.6 two days later they went up to 626. Dr called me today and said my levels dropped back down to 500 something and that she was sorry. We have had 6 miscarriages prior to this one. However, with my oldest daughter I was exactly 5 weeks pregnant (I am 5 weeks and 6 days today) and I had some pain so I went to the hospital and they said I was having a miscarriage. I was 19 at the time and didn't know how to handle it. I was numb. Their next move?! They sent me home and said I would pass it on my own. Okay right?! Only, I never passed her, 9 months later out comes my beautiful healthy baby girl. I think she was a twin and the twin passed away. I am kind of hopeful that this is the same situation seeing as twins runs in my husbands family. I have not started to bleed or spot yet. Slight cramping but that has been happened for since day one. 
Any thoughts or suggestions/advice?!?!