worried my hcg levels are low. please help

Marissa

so 14dpo I got a very faint positive and had a blood test and my hcg levels were 24 today 16dpo took another urine test and the line had gotten darker and had another blood test today and it went up to 68. I'm just worried my hcg levels are super low. very faint line was first test and second darker line was today