Slow rising HCG .. I dont know how to feel

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This is my first pregnancy I dont know how to feel .. my HCG is not doubling but i heard heartbeat 2 time already going next week again . Everytime i see my HCG result it break my heart into millions pieces .. everytime my doctor see result and tell me this pregnancy has only 10% chance to survive .i cant explain how i feel when i hear this word from my doctor . Every single day i cry from the thought that i am gonna miscarry soon .

1 beta 15 dpo : 215

2 beta 18 dpo : 800

3 beta 21 dpo : 1459

4 beta 24 dpo : 2000

5 beta 26 dpo : 2433

6 beta 31 dpo : 4301

7 beta 36 dpo : 5600

8 beta 40 dpo : 5800

First i went for ultrasound around 5 week 5 days to rule out ectopic they said they can measure it 1 week behind . Second time i went at 6 week 5 day they again measure it 1 week behind but they could find heartbeat 116 bpm was the heartbeat at that point but due to slow rising HCG my doctor was not hopefull than again they called me today for ultrasound at 7 week 5 day they can measure it only 6 week 5 day but heartbeat was 135 bpm . My doctor still told me today that i am gonna miscarry soon.i dont know how to feel about this . This is my firat pregnancy. How you guys manage anxiety during such hard time ? Please help me guys .. i have nobody to talk about it