Terrified

I got my blood test results back today. They ran an hcg that was 3( just wanted to check to see if I was pregnant), my progesterone level is 13.6 which means I did ovulate on my own, I didn't ovulate for 7 months, had to go on clomid, got pregnant then miscarried 7 weeks later. Now I ovulated on my own and I'm terrified. My breasts started hurting the other day but I wasn't trying to make anything out of it. All the other blood tests came back normal. I've had 3 miscarriages. She said if I don't get a period within 7-10 days then they will repeat the pregnancy test. So counting from Friday that is sept 5-8th. I don't know how to feel. Maybe I just need progesterone to keep the pregnancy going but I'm so scared. What if I'm pregnant again, I don't want another miscarriage to happen .