HCG levels

Hans TTC Journey

Hey guys, hoping for some advice on this one cause I’m feeling pretty worried/upset. I’m supposed to be 8 weeks right now and went for blood work on July 10th to check my HCG and it was at 24,986 and then went today July 13th and it only went up to 30,706... is this a possible miscarriage or has anyone experienced low rising levels like this?