17 days

I was pregnant for 17 days. I found out on July 1st & was through the roof with excitement. We only tried for a month and it happened that fast! I thought it was too good to be true. Well, it turns out it was. July 17th I started bleeding and it came with a vengeance. My first appointment was the following morning. I never got to see my baby or hear a heartbeat. It's now almost 2 months later, I've had a full cycle with a period and we got the OK to try again. My last period started exactly a month from my miscarriage(August 17 start date) and was totally normal. We've been trying ever since. My fiancé is all over it but now I'm just scared. I don't want it to happen again. My OB suspects that I miscarried because I never had a period coming off the pill. Has anyone had a similar experience and conceived without miscarrying again? I'm terrified that my body has failed me and I won't carry a child, when it's the only thing in the world we want. I just need reassurance😔