Trying not to let my mind get crazy thinking about everything I just really need some comforting words.

I had a miscarriage April 24th. I ovulated May 10th & I just found out I am expecting again. I called my OB and they had me come in for blood work at exactly 14 dpo(4weeks) and my levels were 25. I have another appointment at 5 weeks to get my levels checked again. The nurse just said that they were low but not that it was a good or bad thing. When I took my first test at 11dpo due to symptoms the line was very faint I waited until 13dpo and the line was much darker, I took another test at 16dpo and it was even darker so I know that’s a good sign but now I’m worrying myself that my numbers are low. Has anyone else had a lower number around 4 weeks and went on to have a healthy pregnancy??