Anyone have slow rising hcg levels and have a healthy pregnancy?

🌈👶🏼

I’m kinda freaking out. At 3 weeks 4 days my hcg was 18 , then at 3 weeks 6 days it was 32 then at 4 weeks 2 days it’s at 75... doctor said progesterone is fine and it is rising but it’s slow... I’m terrified of another loss... any words of encouragement??