Iheartbroken and need advice

i had a miscarriage in dec 2016... it wasn't a molar pregnancy at all my obgyn said she doesn't know how it happened. .. anyway im pregnant around 6weeks and she said my levels hcg are 20,000 which are high and im gona miscary this baby cus shes guessing its a molar pregnancy jus cus she thinks my first one was to but it doesn't say in the report so i think shes makin it up... so next week she wants me to take this pill to kill the baby im hurt and confused she doesn't make sense im switching doctors but i dont understand

what would u do if u were in my shoe??...

what are ur levels ??

EDIT: when i got my bfp they were only 175 than a couple days later it was probably 2 days later 1600 a week later it was 20,000

how is this not accurate? ?? they are doubling so ...