3 weeks after miscarriage...pregnant??

Tiffanie
I hope someone can shed some light. I'm goin cray cray. Ok, April 23rd my hcg came back at 33. Crazy low for 4 weeks. April 26 I do hpt and it's a vvvvvfl. April 27 I miscarry. Last week I did an hpt because of endoscopy and I wanted to be sure it was negative-it was. May 17 I do hpt bcuz I feel pregnant again and positive! Darker pink lines than first test in April. I get blood done and it came back at 16. How can I have only fallen by half? Could I be pregnant again? I get blood drawn today but I'm goin crazy thinking I'll have to wait til Monday for results! Has anyone had an experience similar to this?