It probably wouldn't hurt to go chat to a doctor now... they usually like you to have waited for 12 months, but if you suspect there may be a problem (like the irregular cycles), it probably wouldn't hurt to go see one about the irregular cycles and your concern that it will make ttc difficult/impossible. If you have a decent doctor, they should be willing to do some tests to put your mind at ease, even if they won't refer you on for complete assessment just yet - it all depends on age.

I think I've woken up feeling a little tetchy this morning... Using all capitals online is considered shouting, and generally frowned upon...

BW