Honestly go to the doctor , if thats not available right away go to the er . They cant do to much to stop it if it is but they will be able to check you and let you know what they believe is happening amd do an ultrasound and check for heartbeat .
It might be a miscarriage, it might not be. Either way, you have to see your doctor asap as it's not a good sign.
I hope all goes well!