So I didn't know where to post this

Just wondering on some info my partner smokes the green stuff but when his completely stoned he can get it up but can't always blow other times he can multiple times sometimes lots other times very little I'm worried this may affect our chances of having a baby we have miss carried twice in the past 6 months could this be a possible cause I'm worried because I'm almost 30 and would like atleast one more child I have a 13 yr old from a previous relationship