I thought it was my time... (long post)

update: 8/26: hcg labs redone this Am. HCG level dropped from 19 on Saturday to 9 this Am. Urine pregnacy test negative. My doctor cleared me to start trying again as soon as I'm ready.

on my birthday August 14th I got 5 BFP, you can never be too sure, Tuesday of this week I got an instant positive, making sure I wasnt dreaming you know. Not sure this has anything to do with it but Friday night I trip and fall I swear I didnt hit my stomach, about an hour later I noticing light brown spotting didnt think anything of it. Saturday morning light brown spotting still, throughout the day stays brown but gets to be more, call my doctor she asks me to go to an ER to get checked out. Fast forward 3 hours after 4 viles of blood, 1 pee test and transvaginal ultrasound later the doctor comes in tells me my hcg levels are low at only 19, my ultrasound showed my uterus to be empty... he tells me I'm not sure what's going on since you have had no cramping or heavy bleeding but we see nothing in there. my heart instant sinks, I get quiet my facial expression blank, trying not to cry as my husband is already freaking out in the corner. The doctor walks out and I instant feel the tears run down my face. My husband standing in the corner blaming himself, me sitting on the bed trying to get out it's not your fault. I get home use the restroom wipe and there the brown turns to red further confirming my happiness is now gone. 8 long months of trying to conceive with weeks of happiness gone in an instant. Messaged my doctor what was going on and her being the loving amazing doctor she is messages me back at 1 Am still optimistic and hopeful about it all, tells me to be in her office Monday morning so we can figure out what's going on. I woke up this morning puffy eyed, heart broken and ready to cry some more. I dont understand what happen or why it did. I just know it hurts....