thanks for your query
yes that can be a cause
you are now an infertile couple, in that case male partner means you need to be examined first. For that your semen analysis
needs to be done.
You should not do any sexual intercourse for 2 days and then only you should ejaculate for semen analysis.
If your semen analysis result is within normal limit then your second wife need to be undergone investigation for infertility
you should consult a gynecologist for that.
wish you good health.
Dr. Arnab Maji