Could Blighted Ovum Be Due To The Usage Of Crystal Meth?

I am 21 years old , i have a healthy 4year old daughter ,when she was 2 i started using crystalmeth for about 2yrs. I found a great man that turn my life around and helped me stop using crystal meth. I have been 6 months clean as of today, but in those six months i have had 2 blighted ovums Can this be due to my previous crystal meth use ?