Scared I might have lost my baby.

Trizia
I went to the doctor 4 days ago after I had bleeding, she said it was threatened abortion so after 2 days we went to see another doctor and she said it was implantation bleeding and scheduled me for a transvaginal ultrasound. I went for a tvs a while ago and the doctor said there was no gestational sac. 6 weeks and 6 days today. So we are still waiting to see my actual physician later in the afternoon. I did about 7 pregnancy tests which all came out positive, the only downside is that the positive line gets fainter each test. We also did an actual pregnancy urine test at a hospital which showed a positive test result. I'm scared of the idea that I might have lost the baby during the bleeding and I didn't even know. Just because there's no gestational sac seen, and I'm not sure if that's normal. I'm just gonna have to wait for whatever my doctor may say later but the thought that I might have lost the baby haints me and scares me.