Had a miscarriage or not?

I'd suggest reaching out to your midwife—they can tell you more, so ask for an early ultrasound. Most midwives are happy to do this for you. They're the only ones who can really ease your worries right now. On the forum, it's hard to say anything for sure, and don't expect anyone's advice to completely clear up your doubts, no matter what they say. Let me know how it goes? I hope everything's okay with you