Scared!

Nora
Hi Everyone, it's my first time posting. I am also due in March.  I just wanted to ask if anyone has gone through this before. I am about 5 weeks, I started spotting yesterday and immediately went to the ER( I've miscarried before) there they checked hcg and it was to 250, then they did an ultrasound and saw nothing. 😞 I am so scared and worried sick, and the worst part is today the spotting has gotten heavier and I am also cramping. I have a doctors appointment tomorrow. Anyone gone through this but carried to full term? Thanks in advance!