Early pregnancy.

andrea
Few weeks ago I found out that im pregnant but i have low hcg n progesterone levels my ob told me that it was an early pregnancy so they suggested blood drawn n they prescribed progesterone meds to increase my levels. I have irregular periods and my last day of my period was feb28 and when i had my ultrasound yesterday they couldnt tell me what weeks im at and the lady who do d ultrasound to me said that is still in yolk sac. I dont know what is that mean. My ob said that i have to go back next week for another ultrasound. They said that d last day of my period that i gave to them n d weeks of my baby is not matching and i told them i have irregular periods. I had 2 miscarriages already the last one was just last year and im scared. Everything is flashing back to me again. Im started panicking and i dont what to do. Has anyone had this experience or do you have any insight about situation like this. please i need your insight im really scared.