Folic Acid - please give opinions.

Sabrina
Hi all, yesterday marked my 2nd mc within a year. Maybe it's just by chance but last June, after a week of taking the folic acid tablet I miscarried. This June again after exactly a week of taking the same folic acid tablet again I miscarried... 
Maybe it's just in my head but I don't know why this keeps happening to me. It's so heartbreaking!