Thoughts?

Before I was pregnant I was a daily user. When we found out, I stopped smoking for the health of the baby. On 12/17 doctors discovered the gest.sac was in my right fallopian. Emergency surgery and currently recovering. Smoking has helped my pain and the coping from our loss. So I feel like I'm blaming myself for smoking daily before I found out I was pregnant and had an impact on my pregnancy. Once we try again and we are positive.. I will not continue using.. I've read articles about marijuana affecting fertility. Any thoughts? Reassurance?