Feeling unsure

I still don't have a regular cycle. Which makes TTC harder for my husband and I. I am unable to track my cycle because of how infrequent it comes. The last time I had an actual cycle was back in February and back in April I spotted for only two days, but it wasn't full spotting, it was just discharge. My husband thinks he doesn't have strong swimmers but I have been feeling like I'm just not fertile. I am feeling hopeless when it comes to TTC lately because I feel like I am failing my husband and our wants to start a family.