Anyone have high first betas?

Jenny • Late 20's. TTC #1 Recovering from 2nd miscarriage at 6-7 weeks.
Just curious. Had first betas done this week and they were on the high side - beta #1 @ 500 (15dpo), beta #2 @ 952 (17dpo). 
I know the dates are right since I had an <a href="https://glowing.com/glow-fertility-program">IUI</a> with a trigger shot. Either it's a strong strong singleton that implanted early or maybe twins? I know betas are no guarantee of that.