Three back to back chemicals

Hi all -

We conceived our first child on our first try three years ago. Decided to try for a second in May and got a positive pregnancy test the first try. Seven days later got my period and doctor said it was probably an early miscarriage. This happened again the next two months in a row. We know we were pregnant because the last time, the doc took a blood test and got a positive, then retested and the numbers were going down. Test said my hormones appeared fine.

Doc says it’s normal, just not the right time. But doesn’t sound normal to me?

Anyone else have a similar experience?

Thanks.