Hey Happyagain75 - I have always had irregular periods ranging from going a year without one to having a period for 6 months non stop! Finally was diagnosed with Endometriosis and was told it would be very difficult to concieve naturally. Then I got with my DP and got pg after 3 weeks!! He is now nearly 2 and since having him my periods have got alot better although are still not what you would call regular. Am now ttc number 2 but taking a little longer this time.
I thought i too had irregular periods, then I read your post...bimey! When TTC mine ranged from a 'normal ish' 36 to 128 days. After my longest cycel of 128 days, i conceived the following month and DD is now 16 months. Wll be trying again in a year or so.
I have conceived despite irregular periods but it was a difficult time. I also needed help from a subfertility unit.
I would also try and determine exactly why the irregular periods are happening in the first place. There is always a reason why this happens - in my case PCOS was to blame. Both this and thyroid problems must be checked for. There is no real evidence to suggest that the pill is responsible for failure to ovulate - what the pill can do though is mask symptoms of any underlying hormonal imbalance.
Having irregular periods makes you more likely not to be ovulating regularly, if at all.
I would suggest you have a blood test done to see what your hormone levels are like and also seek a referral to a gynae at a subfertility unit.