I'm starting to worry a bit. The period before last was only 2 1/2 days long and light. [they're usually about 6] then my last one was heavier and lasted for about 5 days. But now [4 days after my period ended] I've been having a brown discharge. I know that it usually means just old blood. But I didn't know it could last so long.

I've so been very dizzy and nausated lately. And pains in my lower back. I have been sexually active.. but not in 2 weeks. I'm not sure on what to do. Any advice will be extremely helpful.

Thanks.

Call a doctor. May be tubal pregnancy.