Spotting at 6weeks 4 days

[snemo]

I just started to spot this morning after going to the bathroom. It was on the tissue as was light pink and mixed in with normal discharge (sorry TMI). I called the nurse and she said that there is nothing they can do at this time. So she just told me to take it easy and drink fluids. She also mentioned that if I bled to the point where I was soaking my pad, then to call and come in.
Has anyone else started to spot during early pregnancy. What is it caused by (besides m/c) and how do you stop it.
I have this really bad headache that won't go away, so I wonder if the m/c curse is starting to take it's course.
Please help.