spotting and I am freaking out

Heather
I don't have any pics but can get some if this continues.  I am slightly crampy (and I mean very slight) and am spotting.  It started yesterday (Tuesday night) and went away all day until tonight.  It is lighter tonight but I have noticed some small light pink bits of tissue like things floating in the toilet water (not toilet paper).
Can anyone offer me some piece of mind?  This is my first pregnancy and I am about 5 weeks and 6 days.
I would go to the doc but my prenatal Medicaid hasn't been approved yet and I have no insurance so I can't afford a huge doctor bill.