Probably having my 4th miscarriage

So I have endometriosis and have been ttc for 12 years lost weight and got my bmi to 31and fell pregnant which ended in miscarriage.

Mc sep 15

Mc sep 18

Mc mar 19

And got another bfp on April 8th.

I got a scan on Fri 3rd may and they measured me at 6.3 weeks and fetal pole was 6.something mm but there was no heartbeat. So I have to go back on Fri 10th may. Anyone had anything similar?