I know I am the same way. Mine was worse. It would fall between 30 and 60 days and I skipped periods all the time. If you want to get control of your periods, birth control can help.
I've always been told not to worry about it. It can't be the healthiest thing but i've always been fine and I guess my mother and sister had the same problems. You could try asking your mother about it, see if she was the same way.
Also certain things can delay your period like stress or not eating right. I figured mine was so off cause I am always stressed out.

Mine was really irregular just like munkys and I did go on birth control. It is nice being able to know when its going to come ut for the first couple months it wont be regulated if you choose that option. It could be due to a hormonal imbalance so you should also think about if when you get your period you seem excessively moody or get bad cramps. The birth control would also help with those problems.

I was on birth control in the past and it made me regular. I don't want to be on it now, though. My husband & I haven't been preventing against pregnancy for over 2 years now.... I am starting to worry because I haven't gotten pregnant yet. We haven't been having sex but like 2-3 times a week because we're not actually trying to get pregnany... Still makes me nervous though.

I was on bc from the age 15 to 19 and I just got off of it about a year ago and now my periods are not normal. They usually skip a month. But if you have never been on bc or even if you have irregular periods could be a sign of an underlying problem like thyroid problems, pituitary tumors, stress or a hormone imbalance. It just depends I would go get checked out if its persistant.

My thyroid and hormone levels are all normal (which, since my prolactin isn't high, there's no reason to believe I have a tumor in the pituitary gland). When I went wed., my ob-gyn said that my periods are irregular because I am so thin.