Welcome to the board, and I am so sorry for what you are going thru right now! Cramping & bleeding is pretty common during early pregnancy, and dr's will tell you not to worry unless the bleeding is heavy/bright red/clots. But even then it's not assured that you're having a m/c.
A friend of a friend had heavy cramping/bleeding/clots in early pregnancy and her dr told her she was having a m/c. they apparently never followed up with beta levels though, or maybe she just never went back to have them tested. She went back to the dr 3 months later though bc she was rapidly gaining weight and didn't know why. She hadn't gotten her AF yet either, but she wasn't suprised as she always had irregular AF's. Turned out she was still pg, and went on to have a healthy baby.
I hope you get good news from your appt!