14 dpo with high hcg??

tiffany

I started testing at 6dpo because i had a feeling i was pregnant. Had symptoms starting at 2dpo. I got a very faint positive at 7dpo. At 14dpo my Dr ordered a blood test which was 517. I am exactly 4 weeks. Ovulated on the 8th of April. Anyone else have a blood test this high? I go back again on Wednesday to have a re test. Is this common with a single or could it be multiple?