Feb 3. Hcg 51.3

Feb 7. Hcg 729

Feb 9. Hcg 2100

Feb 14 hcg 15200

Feb 16 hcg 21600

So on valentine's day the ultrasound showed a gestational sac and yolk sac. Gestational sac was showing 5 weeks 6 days. Hcg was 15200 well they wanted to get another hcg today and I called and it was 21,600. The nurse said that they expect a 60 percent increase and mine was only 45.5 increase. My hcg is still increasing but I'm freaking out. I hope I'm not loosing the baby. I'm waiting on my dr to call me. They said at a certain Time the hcg can start to flatten but it's still increasing just not at the rate they want. Please help. Anyone gone through this or have any input. I've had 3 miscarriages I'm so scared.