When you talk about having irregular cycles. Have you always been like that and how much of a fluxuation from cycle to cycle do you have? I'm asking because there is always a chance that you may have PCOS (Polycystic Ovarian Syndrome). Basically it means that your hormone levels do not fluctuate enough to kick in the next set of hormones and have a cycle. This is what I have in particular. I never knew when I would be getting a cycle and if I did, how long it would last and/or how heavy it may be. We went the route that your doctor is talking about which just basically helped an ovum to pop out and the ovulation procedure to continue. This may or may not work but if you have coverage for any of the medications, you may want to try a cycle or two. Most likely your best bet would be to go to a Reproductive Endocrinologist for a full workup and let them actually monitor you during a cycle. This will give them a true idea of what your body goes through during an normal cycle and with that information, they will best be able to guide you in the direction that you would need to go in to get pregnant.
You are more than into the relm of realistically seeking help and a reproductive endocrinologist, while a specialist and usually more expensive, you have a better chance of success with one of these doctors then going to a basic ob/gyn. Nothing against ob/gyns but they do not do the monitoring that a typical RE would do. You are basically flying blind with them. At least with an RE, you are monitored more closely so if the cycle does not work for some reason, they will have a better idea as to why.
I wish you the best of luck. It isn't easy and finding a support group, either in person or online, that you can talk to and just be yourself around will help you more then you realize. My first took 18 months of active working with a doctor to conceive and my second took over 4-1/2 years. A support group of women that are right where you are will be an invaluable asset. For me, I could be myself and they totally understood. Even my husband just didn't quite get it. The group of women I found knew just what I was going through and if there was just a day where I felt like pittying myself, they understood. In turn, I knew what was going on with them when they were having a bad day as well.
Wishing you and your husband the best of luck!