Worrying HCG number?

Georgia675

So have had the following bloods taken:

3w 4 days - 16

3w 7 days - 126 ( 46hr double)

4w 2 days - 336

4w 7 days - 2210 ( 35 hour double )

5w 2 days - 5310 ( 57 hour double )

The last 2 blood draws were doubling time of 57 hours...... has anyone had this happen and have a normal pregnancy? I’m thinking I should prepare for another loss.