I started early (maybe around 11), am 50 now, and been in perimenopause since about 44. Long process. I've have a year with an occassional missed month, a year regular, a year with every other month, a year of irregular (between 2 weeks a 2 months apart), another every other month year, and for the last 2 years have been on a 6 month schedule. I'm eagerly awaiting the 12 month milestone. Getting really tired of perimenopause -- I want the real thing! Hot flashes for 4 or 5 years now. Some bad insomnia at ages 44-46, now only occassionally (like 1-2x per week).
Oil is good, grease is better.
2007 Peter Mooney w/S&S couplers/Terry Butterfly
1993 Bridgestone MB-3/Avocet O2 Air 40W
1980 Columbus Frame with 1970 Campy parts
1954 Raleigh 3-speed/Brooks B72