Do some charting of your cycles. You're
saying their irregular, but that can vary
quite a bit. Are they say 1-4 months
different, or are they say 28-34 days
different. If it's the second one, you're
pretty regular. Check this out
www.Tcoyf.Com you can
learn alot about your cycle and it will
help your on the road to conception. It's
not uncommon to be trying to conceive for
over ayear and for you to be fertile.
Alot of times stressing and trying to plan
it out will make it harder to concieve.
On the above website, there is alot of
information on how to chart and figure
your period cycle out a bit. (also the
book of the same name is full of great
information too!!)