I’d try not to panic yet 🤍 A 57% rise in 48 hours isn’t textbook “doubling,” but it’s still an increase and can be within a normal range early on.
HCG trends can vary a lot between pregnancies.
Your doc will likely repeat bloods and/or do a scan to get a clearer picture. Many mums have had slower rises and still gone on to have healthy pregnancies.
Take it one step at a time. tomorrow’s appointment will give you more answers. Sending you calm vibes 💛