QUOTE (sehlat @ Nov 7 2009, 06:10 PM)

I started 'peri' around age 42 and am now 53 and have been post-menopausal for 3 years. I too had the 'brown discharge' before and after periods. It's apparently 'clotted blood' and endometrial tissue that hasn't completely drained from the uterus during the prior period and has begun to decompose to a brownish state. It's not dangerous or anything bad for you, but as you've probably found out, it smells nasty, like rotted tissue.
This may get worse as your peri continues because as estrogen, and especially progesterone, levels begin to fall with peri, the endometrial blood in the uterus becomes thicker in consistency and less likely to be fully discharged during your period. You'll notice when you have a period that it sometimes will become thick and clotted some or most of the time as the years pass. Nasty!
Without that mid-phase progesterone signal in the last half of your cycle to prompt the lining for it's monthly discharge, estrogen will continue to build up the lining to a point that when you finally DO get a period, you'll get a massive flow, sometimes called the 'waterfall flow'. It can be very disconcerting and irritating to say the least. Sometimes if it doesn't stop, you'll have to have a 'progesterone flush' done to clear things out. Fortunately, I never had THAT long of a period, although my longest was 2 weeks.
The real problem comes in when this 'clotting' happens. These 'blood and lining clots' can actually block the opening of the cervix. When that happens, the uterus will go into contractions similar to birth contractions in order to discharge the clotted contents. Ahhhhhhhhhhhh! When that first happened to me, I thought I was going to die the pain was so intense! The doctor explained to me what was happening and told me that I was progesterone deficient. It was not too long after that happened that I went on HRT for 2 years to get me through the worst of my peri systems.
Your description of this is ooohhhh so familiar!
My longest period was also 2 weeks, but then a week and a half later I had another one, both times it was mostly this 'old' blood. I thought I would never stop. AND, i had those killer cramps too. I WANTED to die they were so bad. I put up with this for 2 yrs.
I couldn't go on HRT due to history of cancer with my mom, so my doctor did an ablation on me to see if we could get the bleeding under control or maybe stop it. Luckily my periods stopped after having the ablation, which in turn caused the killer cramps to stop.
The bad thing is since then its harder to tell when or if I'm still cycling!
I've been in peri since I was 42, I'm now 51, blood test show I'm finally 'in' menopause, but still have a ways to go before I'm considered post. Will be so glad when its over!