Brown Poop Looking Stuff In My Underwear

try not to worry, I found this on the web, it may ease your mind...if you havent had a normal period in a week, maybe buy a preg test to also help with your anxiety....best of luck!! 

Not all cases of brown vaginal discharge are cause for concern. As a woman you are probably aware of the general condition of any discharge ‘down there’. The range of discharge runs the gamut between annoying, embarrassing or inconvenient. Every once in a while however what you notice in your private hygiene moments can be concerning. This is the case for most women when they discover not the red, or clear discharge that is normal, but a dark ruddy brown colored discharge.

What causes brown vaginal discharge?

As uncommon as this is it may not be cause for great concern. Brown vaginal discharge is most often associated with old endometrial tissues. In other words, if your period is late you might get a brown, rather than red, discharge. It could also mean that for whatever reason during your last menses the entire uterine lining failed to make a timely exit. What you are seeing now is the fashionably late exit.

usually not an UTI with vaginal discharge, I have had my share of those as well.  Some STD's do have discharge, you may want to be checked at a local health clinic, I am not sure of your location but in the U.S. Planned Parenthood will test you, and if you can't pay you will not be charged.  It is all confidential.  However being a mom of a 22 year daughter, I encourage you to talk to your mom. I hope it all works out for you.