Frustrated

After going off of BC last November hubby and I were only using the pull out method. I thought I'd end up getting pregnant but didn't which is fine. I've been using OPKs since November and my ovulation has gotten really out of whack. It's been hard to catch and when it does happen it's been anywhere from day 25 to cycle day 46 last month. Now that we are actively TTC my cycles decide to go out of whack?! Do any of you take any natural herbs or anything to help you ovulate? I know there is clomid but we aren't there yet.