Can Slow Moving Sperms Cause Miscarriage?

Hello. I have just had a miscarriage and would like some advice. My daughter (9 months) was conceived by IUI and trying to conceive for 7 years. I fell pregnant in December on first time of trying and was overjoyed. When I had IUI for my daughter the nurse commented on how slow my husbands sperm was moving. Could this be the reason I have just miscarried?