those levels to me look fine for 4 weeks my report from my dr says the normal range for hcg between 3-4 weeeks is 50-500 so you are well within the range my levels at 4 weeks and 4 days were 9880 BUT im having twins not just one
Dont stress you are perfectly within what you should be and as you said you were low with your previous pregnancy so that just might be your body