Hi N.~
I want to start by saying I like your name. It's very unique and I think that's a good thing.
Okay, I looked back and notices you asked about fertility and irregular cycles, but the gap is only 3 months, so I feel pretty confident that you have no children. I strongly suggest you talk to your ob about the cycle thing. Several things could be wrong, they could be serious, or nothing at all, but I'm not a doctor or nurse, so I'll just say to get it checked out.
If I'm wrong and you do have children, then keep in mind that a women's body changes with each pregnancy in the most drastic or insignificant ways. I had virtually no cycle after the birth of my oldest (in 1995) until after the birth of my daughter in 2003. My cousin can only shower after the birth of her son in 1994. Now she suffers severe seasickness so the tub makes her sick. Talk to your doctor and find out if anything can be done to help you.
Good luck with everything...may all your dreams come true ~
J. :)