Irregular MC

Lexus • We had our first baby in June 2016 and now I'm pregnant with baby #2 and couldn't be more excited!
Every since I first started my MC has been irregular. Sometimes I skip 1-3 months and sometimes it's every month. I also never know when my MC is coming because it's never the same time of the month. Could this be why my husband and I are having trouble conceiving? Does anyone else have this problem?