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.