I have a thumb sized clot, is this miscarriage?

Depends. Passing a thumb size clot during pregnancy usually does not mean miscarriage by itself. If the bleeding continues and larger clots along with cramps ensue then this is not a good sign.

Related Questions

Since a miscarriage 2 yrs ago my periods have become excruciating with heavy bright red blood and huge thumb size clots either dark red or fleshy? Why

Reason. It may not be related to your miscarriage. Many women in their forties begin having ovulation issues leading to heavy and painful periods. Probably time to see your GYN for an evaluation. This could be adenomyosis as well. Read more...