A 23 year old without health care concerned about my status here.
Maybe someone can offer me some guidance.

Five days ago my period came, but was average to light, and went away
within 24 hours. (This is abnormal for me, although I have experience
two or three bizarre cycles.) Also, for the past week or so my breasts
have been very tender, and in the past couple days have become "sore"
at times. Sometimes I forget about their soreness, like when I decided
to jog earlier tonight, and the pain comes back.
But the most unnerving thing of all was, during my light jogging a few
hours ago, a discharge from my vagina. At first I thought maybe my
period had returned, but I went to the bathroom to discover the
discharge to be a single brownish, half-dollar-sized clump. This has
never happened to me and I'm a bit worried. Could this be an
infection? An abberation? Or is it the big P?
I have no vaginal itching or excessive odor, but I have gotten cold a
little easier as of late. Just the discharge and the breast pain.
Everything else is normal. Plus I'm a little afraid to go to the
doctor (psychologically and financially).
What's wrong with me?

Thank you for your help,
Ellen D.